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  • Generalized Ajax function [migrated]

    - by TecBrat
    Not sure if this question will be considered "off topic". If it is, I'll remove it, but: I hadn't see this yet so I wrote it and would like to know if this is a good approach to it. Would anyone care to offer improvements to it, or point me to an example of where someone else has already written it better? function clwAjaxCall(path,method,data,asynch) { var xmlhttp; if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); } else {// code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } if(asynch) { xmlhttp.onreadystatechange=function() { if (xmlhttp.readyState==4 && xmlhttp.status==200) { //alert(xmlhttp.responseText); //var newaction=xmlhttp.responseText; //alert('Action becomes '+newaction); return xmlhttp.responseText; } } } if(method=='GET'){path=path+"/?"+data;} xmlhttp.open(method,path,asynch); if(method=='GET'){xmlhttp.send();}else{xmlhttp.send(data);} if (!asynch){return xmlhttp.responseText;} } I then called it like Just Testing <script type="text/javascript" src="/mypath/js/clwAjaxCall.js"></script> <script type="text/javascript"> document.write("<br>More Testing"); document.write(clwAjaxCall("http://www.mysite.com",'GET',"var=val",false)); </script>

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  • Is this form of cloaking likely to be penalised?

    - by Flo
    I'm looking to create a website which is considerably javascript heavy, built with backbone.js and most content being passed as JSON and loaded via backbone. I just needed some advice or opinions on likely hood of my website being penalised using the method of serving plain HTML (text, images, everything) to search engine bots and an js front-end version to normal users. This is my basic plan for my site: I plan on having the first request to any page being html which will only give about 1/4 of the page and there after load the last 3/4 with backbone js. Therefore non javascript users get a 'bit' of the experience. Once that new user has visited and detected to have js will have a cookie saved on their machine and requests from there after will be AJAX only. Example If (AJAX || HasJSCookie) { // Pass JSON } Search Engine server content: That entire experience of loading via AJAX will be stripped if a google bot for example is detected, the same content will be servered but all html. I thought about just allowing search engines to index the first 1/4 of content but as I'm considered about inner links and picking up every bit of content I thought it would be better to give search engines the entire content. I plan to do this by just detected a list of user agents and knowing if it's a bot or not. If (Bot) { //server plain html } In addition I plan to make clean URLs for the entire website despite full AJAX, therefore providing AJAX content to www.example.com/#/page and normal html to www.example.com/page is kind of our of the question. Would rather avoid the practice of using # when there are technology such as HTML 5 push state is around. So my question is really just asking the opinion of the masses on if it's likely that my website will be penalised? And do you suggest an alternative which avoids 'noscript' method

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  • While loop error?

    - by user134134
    I believe the problem with my code lies within my while loop. Admittedly, I'm rather new to Javascript programming. Does this look okay: <! DOCTYPE html> <head><title>title</title></head> <body> <script type="text/javascript"> alert("Hello, stranger. Please note that at this current moment, we do not have a save function. It might be a good idea to record your answers."); var preAnswer = 0; while (var preAnswer = 0) { var name = prompt("What is your name? Please capitalise it, for the sake of grammar.") if (name === "") { alert("What are you playing at? You didn't type anything."); var preAnswer = 0; } else { var preAnswer = 1 } } alert("Nice name, " + name + ", bro.") </script> </body> </html> I'm sure I've done something wrong, as it isn't functioning.

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  • How to talk a client out of a Flash website?

    - by bunglestink
    I have recently been doing a bunch of web side projects through word of mouth recommendations only. Although I am much more a of a programmer than a designer by any means, my design skills are not terrible, and do not hate dealing with UI like many programmers. As a result, I find myself lured into a bunch of side projects where aside from a minimal back end for content administration, most of the programming is on front end interfaces (read javascript/css). By far the biggest frustration I have had is convincing clients that they do not want Flash. Aside the fact that I really do not enjoy Flash "development", there are many practical reasons why Flash is not desirable (lack of compatibility across devices, decreased client accessibility, plug-in requirements, increased development time, etc.). Instead of just flat out telling the clients "I will not build you a flash website", I would much rather use tactics to convince/explain to them that this is not what they actually want, ie: meet their requirements any better than standard html/css/js and distract users from their content. What kind of first hand experience do others have with this? How do you explain to someone that javascript/css/AJAX is usually a better option for most websites? Why do people want to use Flash so bad to begin with? This question pertains to clients who do not have any technical reasons for wanting flash, but just want it because they think it makes pretty websites.

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  • Which web framework or technologies would suit me?

    - by Suraj Chandran
    Hi, I had been working on desktop apps and server side(non web) for some time and now I am diving in to web first time. I plan to write a scalable enterprise level app. I have worked with Java, Javascript, Jquery etc. but I absolutely hate jsp. So is there any framework that focuses on developing enterprise level web apps without jsp. I liked Wicket's approach, but I think there is a little lack of support of dynamic html in it and jquery(yes i looked at wiquery). Also I feel making wicket apps scalable would take some sweat. Can Spring MVC, Struts2 etc. help me make with this with just using say Java, JavaScript, and JQuery. Or are there any other options for me like Wicket. Please do forgive if anything above looks insane, I am still working on my understanding with enterprise web apps. NOTE: If you think that I should take a different direction or approach, please do suggest!

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  • How to overcome politics of the net (Google translate code refuses to work from a specific region)

    - by Jawad
    According to the FAQ's I am not sure if my question is a ok to ask or will be closed or should I post it in the meta or even I would blame some one for downvoting it. However it is one that has been bugging me since the trouble strated. Let me explain. I have this Web Site. It uses the Google Translate API (Can't post the link, does not open from this region) with the following code. <meta name="google-translate-customization" content="9f841e7780177523-3214ceb76f765f38-gc38c6fe6f9d06436-c"></meta> <script type="text/javascript"> function googleTranslateElementInit() { new google.translate.TranslateElement({pageLanguage: 'en'}, 'google_translate_element'); } </script> <script type="text/javascript" src="http://translate.google.com/translate_a/element.js?cb=googleTranslateElementInit"></script> The problem is since this, it just stopped working. On the site you can see that I had to actually remove the above from here, here, and here while left it here, here, here and here. This is so because the the web site "refuses" to load at all with the pages that have the code (i.e., from this region.) If I use Firefox Stealthy Plugin and open the site in Firefox, It works like a charm without any problems. But with Google Chrome, Apple Safari and Opera Web browser, the site does not load/open at all because of the Google translate. (I know this because If I remove the Google Translate Code, the site works/loads fine) It was one thing to program for "cross browser compatability" and alltogether another to program for "cross region compatability". What can I do to make sure that the site works from anywhere? Do I completely remove the Google Translate code and just have to do without the additional functionality or Do I look for alternatives like this or according to this?

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  • A* Start path finding in HTML5 Canvas

    - by gyhgowvi
    I'm trying implement A* Start path finding in my games(which are written with JavaScript, HTML5 Canvas). Library for A* Start found this - http://46dogs.blogspot.com/2009/10/star-pathroute-finding-javascript-code.html and now I'm using this library for path finding. And with this library, I'm trying write a simple test, but stuck with one problem. I'm now done when in HTML5 canvas screen click with mouse show path until my mouse.x and mouse.y. Here is a screenshot - http://oi46.tinypic.com/14qxrl.jpg (Pink square: Player, Orange squares: path until my mouse.x/mouse.y) Code how I'm drawing the orange squares until my mouse.x/mouse.y is: 'http://pastebin.com/bfq74ybc (Sorry I do not understand how upload code in my post) My problem is I do not understand how to move my player until path goal. I've tried: 'http://pastebin.com/nVW3mhUM But with this code my player is not beung drawn.(When I run the code, player.x and player.y are equals to 0 and when I click with the mouse I get the path player blink and disappear) Maybe anyone know how to solve this problem? And I'm very very very sorry for my bad English language. :)

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  • How to overcome politics of the net (Google translate code refuses to work from a specific region) [closed]

    - by Jawad
    Possible Duplicate: How to overcome politics of the net (Google translate code refuses to work from a specific region) I have this Web Site. It uses the Google Translate API (Can't post the link, does not open from this region) with the following code. <meta name="google-translate-customization" content="9f841e7780177523-3214ceb76f765f38-gc38c6fe6f9d06436-c"></meta> <script type="text/javascript"> function googleTranslateElementInit() { new google.translate.TranslateElement({pageLanguage: 'en'}, 'google_translate_element'); } </script> <script type="text/javascript" src="http://translate.google.com/translate_a/element.js?cb=googleTranslateElementInit"></script> The problem is since this, it just stopped working. On the site you can see that I had to actually remove the above from here, here, and here while left it here, here, here and here. This is so because the the web site "refuses" to load at all with the pages that have the code (i.e., from this region.) If I use Firefox Stealthy Plugin and open the site in Firefox, It works like a charm without any problems. But with Google Chrome, Apple Safari and Opera Web browser, the site does not load/open at all because of the Google translate. (I know this because If I remove the Google Translate Code, the site works/loads fine) It was one thing to program for "cross browser compatability" and alltogether another to program for "cross region compatability". What can I do to make sure that the site works from anywhere? Do I completely remove the Google Translate code and just have to do without the additional functionality or Do I look for alternatives like this or according to this?

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  • Incorporating libs into module pattern

    - by webnesto
    I have recently started using require.js (along with Backbone.js, jQuery, and a handful of other JavaScript libs) and I love the module pattern (here's a nice synopsis if you're unfamiliar: http://www.adequatelygood.com/2010/3/JavaScript-Module-Pattern-In-Depth). Something I'm running up against is best practices on incorporating libs that don't (out of the box) support the module pattern. For example, jQuery without modification is going to load into a global jQuery variable and that's that. Require.js recognizes this and provides an example project for download with a (slightly) modified version of jQuery to incorporate with a require.js project. This goes against everything I've ever learned about using external libs - never modify the source. I can list a ton of reasons. Regardless, this is not an approach I'm comfortable with. I have been using a mixed approach - wherein I build/load the "traditional" JS libraries in a "traditional" way (available in the global namespace) and then using the module pattern for all of my application code. This seems okay to me, but it bugs me because one of the real beauties of the module pattern (no globals) is getting perverted. Anyone else got a better solution to this problem?

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  • What stops HTML5 and JS apps to perform as good as native apps?

    - by Amogh Talpallikar
    From what I understand, HTML is a mark-up language, so is the content of XAML, XIB and whatever Android uses and other native UI development frameworks. JavaScript is a programming language used along with it to handle client side scripting which will include things like event handling, client side validations and anything else C#,Java,Objective-C or C++ do in various such frameworks. There are MVC/MVVM patterns available in form frameworks like Sencha's, Angular etc. We have localStorage in form of both sqlite and key-value store as other frameworks have and you have API specification for almost everything that it missing. Whenever a native UI frameworks has to render UI , it has to parse a similar the markup and render the UI. Question break-down What stops from doing the same in HTML and JS itself ? Instead of having a web-control or browser as a layer in between why can't HTML(along with CSS) and JS be made to perform the same way ? Even if there is a layer,so does .net runtime and JVM are in other cases where C++,C are not being used. So Lets take the case of Android, like Dalvik, why Can't Chromium be another option(along with dalvik and NDK) where HTML does what android markup does and JavaScript is used to do what Java does ? So the Question is, Even if current implementations aren't as good, but theoretically is it possible to get HTML5 based applications to work as other native apps specially on mobile ?

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  • Tracking Outgoing Links With Google Analytics Events

    - by the_archer
    I've been trying to track clicks on external links on my website using the events tracking method. So I've got my Google Analytics code setup before body ends as shown below (note: quotes have been entitied by blogger, but it works fine): <script type='text/javascript'> var _gaq = _gaq || []; _gaq.push([&#39;_setAccount&#39;, &#39;UA-XXXXXXX-X#39;]); _gaq.push([&#39;_trackPageview&#39;]); (function() { var ga = document.createElement(&#39;script&#39;); ga.type = &#39;text/javascript&#39;; ga.async = true; ga.src = (&#39;https:&#39; == document.location.protocol ? &#39;https://ssl&#39; : &#39;http://www&#39;) + &#39;.google-analytics.com/ga.js&#39;; var s = document.getElementsByTagName(&#39;script&#39;)[0]; s.parentNode.insertBefore(ga, s); })(); </script> Now I wanted to track a link on the addthis.com follow widget. So there is a link of the type below to which following instructions from here I added the onclick event. <a addthis:url='http://feeds.feedburner.com/myfeedburnerlurl' onClick="_gaq.push(['_trackEvent', 'Subscription Clicks', 'RSS']);" class='addthis_button_rss_follow'/> I clicked on it a couple of times, left it for over a day now, but nothing shows up in google analytics events. It just says zero events. Here's a screenshot of the events page on GA: Could anybody help me? Am I doing anything wrong?

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  • To PHP or Not to PHP? [closed]

    - by Vad
    Should I learn PHP in depth for my smaller projects or not? My main knowledge is Java/JavaScript for the web. My old small projects were written in classic ASP. However, ASP had its days. Now I am looking into going deeper with another scripting language which I can use for small website projects. Though I know PHP on a basic level I never liked PHP. But I have to admit it is so widely used that I better start liking it. And all hosting services offer mostly PHP solutions. However, there is quite a number of issues with PHP when I google for it. Developers seem to not like it a lot. I wish I would use server-side JavaScript for all my needs, but hosting is an issue plus many small businesses already want to improve their existing PHP sites. And lastly, say I want to create a web app for distribution. PHP sounds like the best bet. Or am I wrong?

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  • Is there an elegant way to track multiple domains under separate accounts with google analytics?

    - by J_M_J
    I have a situation where a content management system uses the same template for multiple websites with different domain names and I can't make a separate template for each. However, each website needs to be tracked with Google analytics. Would this be appropriate to track each domain like this by putting in some conditional code? And would this be robust enough not to break? Is there a more elegant way to do this? <script type="text/javascript"> var _gaq = _gaq || []; switch (location.hostname){ case 'www.aaa.com': _gaq.push(['_setAccount', 'UA-xxxxxxx-1']); break; case 'www.bbb.com': _gaq.push(['_setAccount', 'UA-xxxxxxx-2']); break; case 'www.ccc.com': _gaq.push(['_setAccount', 'UA-xxxxxxx-3']); break; } _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(ga); })(); </script> Just to be clear, each website is a separate domain name and must be tracked separately, NOT different domains with same pages on one analytics profile.

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  • What are some best practices for minimizing code?

    - by CrystalBlue
    While maintaining the sites our development team has created, we have come across include files and plugins that have proven to be very useful to more then one part of our applications. Most of these modules have come with two different files, a normal source file and a min file. Seeing that the performance and speed of a page can be increased by minimizing the size of the file, we're looking into doing that to our pages as well. The problem that we run into is a lot of our normal pages (written in ASP classic) is a mix of HTML, ASP, Javascript, CSS, and include files. We have some pages that have their JS both in include files and in the page, depending on if the function is only really used in that page or if it's used in many other pages. For example, we have a common.js and an ajax.js file, both are used in a lot of pages, but not all of them. As well as having some functions in a page that doesn't really make sense to put into one master page. What I have seen a few other people do online is use one master JS file and place all of their javascript into that, minify it, gzip it, and only use that on their production server. Again, this would be great, but I don't know if that fully works for our purposes. What I'm looking for is some direction to go with on this. I'm in favor of taking all of our JS and putting it in one include file, and just having it included in every page that is hit. However, not every page we have needs every bit of JS. So would it be worth the compilation and minifying of the files into one master file and include it everywhere, or would it be better to minify all other files and still include them on a need-to-use basis?

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  • Google Analytics Not tracking data correctly IP-address issue?

    - by PaperThick
    I have developed a small site for a client and the site has been placed inside a <iframe> at the clients site. The GA-script I'm using looks like this: <script type="text/javascript"> var _gaq = _gaq || []; _gaq.push( ['_setAccount', 'UA-XXXXXXXX-2'], //My company's GA-account ['_trackPageview'], ['b._setAccount', 'UA-XXXXXXXX-1'], // Test GA-account ['b._trackPageview'], ['th._setAccount', 'UA-XXXXXXX-3'], ['th._setDomainName', '.clientdomain.se'], // Client GA-account ['th._trackPageview'] ); (function () { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); </script> </head> As you can see I report the GA pageviews to the client as well. The GA script is tracking visitors and pageviews at both ends. But the problem is that on my clients side the visitor-count is more than double what they are on my end (20 000 vs 5 000). At first I thought that it was being duplicated at some point but when I checked my Crazy-Egg account I saw that it had tracked over 10 000 visits and then stopped tracking because that was my limit on the account. The page my site is on is on a IP-address (http://XXX.XXX.XX.X/campaign/) and not on a "valid url". Could that be an issue why some of the visitors isn't beeing tracked? Thanks in advance

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  • what will EcmaScript 6 bring to the table for us

    - by user697296
    Our company ported moderate chunks of business logic to JavaScript. We compile the code with a minifier, which further improves performance. Since the language is dynamically typed, it lends itself well to obfuscation, which occurs as a byproduct of minification. We went to great efforts to ensure it positively screams, performance-wise. We can now do what we did before, faster, better, with less code, on more platforms. In summary, we are very satisfied with the current state of the language. I personally love the language especially for its cross-platform nature. So naturally, I read up a lot about the state of JavaScript compilers, performance and compatibility across as many browsers and platforms as I have time to research. The one theme which has been growing louder and louder these days, is the news about ECMAScript 6. So far, what I have been able to gather is that ES6 promises a better development experience; firstly by enabling new ways to do things, secondly by reporting errors early. This sounds great for those who are still waiting for the language to meet their needs before jumping on board. But we have already jumped on board in a big way. Sure, I expect that we will have to do ongoing maintenance and feature revisions on our code through the years, and that we would obviously make use of best practices at the time. But I don't see us refactoring major portions of it to take advantage of language features that are mostly intended to boost developer productivity. I keep wondering, what impact will the language advances ultimately have on our existing, well-written, well-performing code base? Is there something I am missing? Is there something we ought to look out for? Does anyone have tips or guidance on how we should approach the ecmascript.next finalization? Should we care?

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  • Is this JS code a good way for defining class with private methods?

    - by tigrou
    I was recently browsing a open source JavaScript project. The project is a straight port from another project in C language. It mostly use static methods, packed together in classes. Most classes are implemented using this pattern : Foo = (function () { var privateField = "bar"; var publicField = "bar";     function publicMethod() { console.log('this is public');     } function privateMethod() { console.log('this is private'); } return {   publicMethod : publicMethod, publicField : publicField }; })(); This was the first time I saw private methods implemented that way. I perfectly understand how it works, using a anonymous method. Here is my question : is this pattern a good practice ? What are the actual limitations or caveats ? Usually i declare my JavaScript classes like that : Foo = new function () { var privateField = "test"; this.publicField = "test";     this.publicMethod = function()     { console.log('this method is public'); privateMethod();     } function privateMethod() { console.log('this method is private'); } }; Other than syntax, is there any difference with the pattern show above ?

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  • cookie not being sent when requesting JS

    - by Mala
    I host a webservice, and provide my members with a Javascript bookmarklet, which loads a JS sript from my server. However, clients must be logged in, in order to receive the JS script. This works for almost everybody. However, some users on setups (i.e. browser/OS) that are known to work for other people have the following problem: when they request the script via the javascript bookmarklet from my server, their cookie from my server does not get included with the request, and as such they are always "not authenticated". I'm making the request in the following way: var myScript = eltCreate('script'); myScript.setAttribute('src','http://myserver.com/script'); document.body.appendChild(myScript); In a fit of confused desperation, I changed the script page to simply output "My cookie has [x] elements" where [x] is count($_COOKIE). If this extremely small subset of users requests the script via the normal method, the message reads "My cookie has 0 elements". When they access the URL directly in their browser, the message reads "My cookie has 7 elements". What on earth could be going on?!

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  • Play sound on menu items on hover [migrated]

    - by Mahalia Samuels
    How can I go about making a sound clip play when an element is hovered over? I'm using the latest Wordpress, and the parent theme I am using gives me an option to paste scripts which it will embed to the <head> section. Is there a script which I can just add to my <head> that will play the sound when the cursor moves over my menu item class .menu li? I spent several hours trying to figure this out the other day with no avail. I've done this before in a simple HTML website: <head> <script language="javascript" type="text/javascript"> function playSound(soundfile) { document.getElementById("dummy").innerHTML= "<embed src=\""+soundfile+"\" hidden=\"true\" autostart=\"true\" loop=\"false\" />"; } </script> </head> <li><a href="index.html" onmouseover="playSound('lib/hover.mp3');" onclick="playSound('lib/click.mp3');"><span>Home</span></a></li> Not sure how to deploy this on Wordpress though.

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  • Is it bad practice to apply class-based design to JavaScript programs?

    - by helixed
    JavaScript is a prototyped-based language, and yet it has the ability to mimic some of the features of class-based object-oriented languages. For example, JavaScript does not have a concept of public and private members, but through the magic of closures, it's still possible to provide the same functionality. Similarly, method overloading, interfaces, namespaces and abstract classes can all be added in one way or another. Lately, as I've been programming in JavaScript, I've felt like I'm trying to turn it into a class-based language instead of using it in the way it's meant to be used. It seems like I'm trying to force the language to conform to what I'm used to. The following is some JavaScript code I've written recently. It's purpose is to abstract away some of the effort involved in drawing to the HTML5 canvas element. /* Defines the Drawing namespace. */ var Drawing = {}; /* Abstract base which represents an element to be drawn on the screen. @param The graphical context in which this Node is drawn. @param position The position of the center of this Node. */ Drawing.Node = function(context, position) { return { /* The method which performs the actual drawing code for this Node. This method must be overridden in any subclasses of Node. */ draw: function() { throw Exception.MethodNotOverridden; }, /* Returns the graphical context for this Node. @return The graphical context for this Node. */ getContext: function() { return context; }, /* Returns the position of this Node. @return The position of this Node. */ getPosition: function() { return position; }, /* Sets the position of this Node. @param thePosition The position of this Node. */ setPosition: function(thePosition) { position = thePosition; } }; } /* Define the shape namespace. */ var Shape = {}; /* A circle shape implementation of Drawing.Node. @param context The graphical context in which this Circle is drawn. @param position The center of this Circle. @param radius The radius of this circle. @praram color The color of this circle. */ Shape.Circle = function(context, position, radius, color) { //check the parameters if (radius < 0) throw Exception.InvalidArgument; var node = Drawing.Node(context, position); //overload the node drawing method node.draw = function() { var context = this.getContext(); var position = this.getPosition(); context.fillStyle = color; context.beginPath(); context.arc(position.x, position.y, radius, 0, Math.PI*2, true); context.closePath(); context.fill(); } /* Returns the radius of this Circle. @return The radius of this Circle. */ node.getRadius = function() { return radius; }; /* Sets the radius of this Circle. @param theRadius The new radius of this circle. */ node.setRadius = function(theRadius) { radius = theRadius; }; /* Returns the color of this Circle. @return The color of this Circle. */ node.getColor = function() { return color; }; /* Sets the color of this Circle. @param theColor The new color of this Circle. */ node.setColor = function(theColor) { color = theColor; }; //return the node return node; }; The code works exactly like it should for a user of Shape.Circle, but it feels like it's held together with Duct Tape. Can somebody provide some insight on this?

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  • I am making a maze type of game using javascript and HTML and need some questions answered [on hold]

    - by Timothy Bilodeau
    First off, i am a noob to JavaScript but am willing to learn. :) I found a simple JavaScript moment engine created by another member on this site. Using that i made it so my character can walk around within a rectangle/square shaped room. I want to make it so the character can walk through a "doorway" within a wall to the next room. Either that or make it so if the character moves over a certain image within the room it will take the player to another webpage in which the character "spawns" into the room and so on and so fourth. Here is a link to what i have made so far as to get an idea. http://bit.ly/1fSMesA Any help would be much appreciated. Here is the javascript code for the character movement and boundaries. <script type='text/javascript'> // movement vars var xpos = 100; var ypos = 100; var xspeed = 1; var yspeed = 0; var maxSpeed = 5; // boundary var minx = 37; var miny = 41; var maxx = 187; // 10 pixels for character's width var maxy = 178; // 10 pixels for character's width // controller vars var upPressed = 0; var downPressed = 0; var leftPressed = 0; var rightPressed = 0; function slowDownX() { if (xspeed > 0) xspeed = xspeed - 1; if (xspeed < 0) xspeed = xspeed + 1; } function slowDownY() { if (yspeed > 0) yspeed = yspeed - 1; if (yspeed < 0) yspeed = yspeed + 1; } function gameLoop() { // change position based on speed xpos = Math.min(Math.max(xpos + xspeed,minx),maxx); ypos = Math.min(Math.max(ypos + yspeed,miny),maxy); // or, without boundaries: // xpos = xpos + xspeed; // ypos = ypos + yspeed; // change actual position document.getElementById('character').style.left = xpos; document.getElementById('character').style.top = ypos; // change speed based on keyboard events if (upPressed == 1) yspeed = Math.max(yspeed - 1,-1*maxSpeed); if (downPressed == 1) yspeed = Math.min(yspeed + 1,1*maxSpeed) if (rightPressed == 1) xspeed = Math.min(xspeed + 1,1*maxSpeed); if (leftPressed == 1) xspeed = Math.max(xspeed - 1,-1*maxSpeed); // deceleration if (upPressed == 0 && downPressed == 0) slowDownY(); if (leftPressed == 0 && rightPressed == 0) slowDownX(); // loop setTimeout("gameLoop()",10); } function keyDown(e) { var code = e.keyCode ? e.keyCode : e.which; if (code == 38) upPressed = 1; if (code == 40) downPressed = 1; if (code == 37) leftPressed = 1; if (code == 39) rightPressed = 1; } function keyUp(e) { var code = e.keyCode ? e.keyCode : e.which; if (code == 38) upPressed = 0; if (code == 40) downPressed = 0; if (code == 37) leftPressed = 0; if (code == 39) rightPressed = 0; } </script> here is the HTML code to follow <!-- The Level --> <img src="room1.png" /> <!-- The Character --> <img id='character' src='../texture packs/characters/snazgel.png' style='position:absolute;left:100;top:100;height:40;width:26;'/>

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  • JavaScript Intellisense with Telerik in ASP.NET Master Page Project with VS 2010

    - by Otto Neff
    Today I was looking for a solution to get finally the JScript/Javascript/jQuery Intellisense Featureworking with my ASP.Net Webform Project to work. I found some good articles: - JScript IntelliSense Overview- JScript IntelliSense: A Reference for the “Reference” Tag- Enabling JavaScript intellisense in VS.NET 2010 to work with SharePoint 2010- Rich IntelliSense for jQueryBUT, all of suggested solutions did not work right with my Master Page based Visual Studio 2010 Solution.Only with physical Javascript Files (Telerik includes certain Javascript Files like jQuery as Ressource) or/andconfigure always a new ASP.NET Scriptmanager / RadScriptManager on every page derived from the Master Page, wasn't exactly what I was looking for. So I came up with the following simple Solution, to Trick VS2010and still have the Project running with multiple runat="server" Scriptmanagers. In short:- New ASP.NET control derived from ScriptManager with emtpy overwritten OnInit() to use it as emtpy wrapper for VS2010. In detail:New RadScriptManager Classusing System; using System.Collections.Generic; using System.Linq; using System.Web; using Telerik.Web.UI; namespace IntellisenseJavascript.Controls { public class IntelliJS : RadScriptManager { protected override void OnInit(EventArgs e) { } protected override void OnPreRender(EventArgs e) { } protected override void OnLoad(EventArgs e) { } protected override void Render(System.Web.UI.HtmlTextWriter writer) { } public override void RenderControl(System.Web.UI.HtmlTextWriter writer) { } } } web.config<configuration> ... <system.web> ... <pages> <controls> <add tagPrefix="telerik" namespace="Telerik.Web.UI" assembly="Telerik.Web.UI, Version=2011.3.1115.40, Culture=neutral, PublicKeyToken=121fae78165ba3d4"/> <add tagPrefix="VSFix" namespace="IntellisenseJavascript.Controls" assembly="IntellisenseJavascript"/> </controls> </pages> ... Master Page<%@ Master Language="C#" AutoEventWireup="true" CodeBehind="Site.master.cs" Inherits="IntellisenseJavascript.Site" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html > <head id="head" runat="server"> <title></title> <telerik:RadStyleSheetManager ID="radStyleSheetManager" runat="server" /> </head> <body> <form id="form" runat="server"> <telerik:RadScriptManager ID="radScriptManager" runat="server"> <Scripts> <asp:ScriptReference Assembly="Telerik.Web.UI, Version=2011.3.1115.40, Culture=neutral, PublicKeyToken=121fae78165ba3d4" Name="Telerik.Web.UI.Common.Core.js" /> <asp:ScriptReference Assembly="Telerik.Web.UI, Version=2011.3.1115.40, Culture=neutral, PublicKeyToken=121fae78165ba3d4" Name="Telerik.Web.UI.Common.jQuery.js" /> <asp:ScriptReference Assembly="Telerik.Web.UI, Version=2011.3.1115.40, Culture=neutral, PublicKeyToken=121fae78165ba3d4" Name="Telerik.Web.UI.Common.jQueryInclude.js" /> </Scripts> </telerik:RadScriptManager> <telerik:RadAjaxManager ID="radAjaxManager" runat="server"> </telerik:RadAjaxManager> <div> #MASTER CONTENT# <asp:ContentPlaceHolder ID="contentPlaceHolder" runat="server"> </asp:ContentPlaceHolder> </div> </form> <script type="text/javascript"> $(function () { // Masterpage ready $('body').css('margin', '50px'); }); </script> </body> </html> ASPX Page<%@ Page Title="" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="IntellisenseJavascript.Default" %> <asp:Content ID="Content1" ContentPlaceHolderID="contentPlaceHolder" runat="server"> <VSFix:IntelliJS runat="server" ID="intelliJS"> <Scripts> <asp:ScriptReference Assembly="Telerik.Web.UI, Version=2011.3.1115.40, Culture=neutral, PublicKeyToken=121fae78165ba3d4" Name="Telerik.Web.UI.Common.Core.js" /> <asp:ScriptReference Assembly="Telerik.Web.UI, Version=2011.3.1115.40, Culture=neutral, PublicKeyToken=121fae78165ba3d4" Name="Telerik.Web.UI.Common.jQuery.js" /> <asp:ScriptReference Assembly="Telerik.Web.UI, Version=2011.3.1115.40, Culture=neutral, PublicKeyToken=121fae78165ba3d4" Name="Telerik.Web.UI.Common.jQueryInclude.js" /> </Scripts> </VSFix:IntelliJS> <div style="border: 5px solid #FF9900;"> #PAGE CONTENT# </div> <script type="text/javascript"> $(function () { // Page ready $('body').css('border', '5px solid #888'); }); </script> </asp:Content> The Result I know, this is not the way it meant to be... but now at least you can have a Main ScriptManager for all Common Scripts and Settings, inject page specific Javascripts in PageLoad Event in normal ASPX Files and have JavaScript Intellisense for defined Scripts from JS Files or Assembly Ressouce in your Content Maybe, vNext will fix this.

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  • Why won't Javascript assembled Iframe load in IE6 over HTTPS although it will over HTTP?

    - by Lauren
    The issue: The iframe won't load inside the tags on the review and submit page here: https://checkout.netsuite.com/s.nl/c.659197/sc.4/category.confirm/.f Login:[email protected] pass:test03 To produce problem: - Where it says "Your Third Party Shipper Numbers (To enter one, click here.)", click "here" to see the form that won't load in IE6. It seems to load in every other modern browser. The same form works fine on this page (you have to click on the "order sample" button to see the link to the same form): http://www.avaline.com/R3000_3 Here's the HTML: <div style="border-color: rgb(255, 221, 221);" id="itmSampl"> <div id="placeshipnum" style="display: none;"></div> <div id="sampAdd"> <strong>Your Third Party Shipper Numbers</strong> (To enter one, click <a rel="nofollow" href="javascript:;" onclick="enterShipNum()">here</a>.) <ul style="list-style: none outside none; padding-left: 20px;"> <li><span class="bold">UPS #</span>: 333333</li> <li><span class="bold">FedEx #</span>: 777888999</li> </ul> </div> </div> Upon clicking the "to enter one, click here" link this is the iframe HTML in all browsers except IE6 (in IE6, the "shipnum" div element is assembled, but that's it): <div id="placeshipnum" style="display: block;"> <div id="shipnum" style="background: none repeat scroll 0% 0% rgb(255, 255, 255);"> <div class="wrapper-x"> <a title="close window" class="linkfooter" href="javascript:;" onclick="enterShipNum()"> <img height="11" width="11" alt="close window" src="/c.659197/site/av-template/x-image-browser.gif"> </a> </div> <iframe scrolling="no" height="240" frameborder="0" width="190" src="https://forms.netsuite.com/app/site/crm/externalleadpage.nl?compid=659197&amp;formid=56&amp;h=9b260d2f9bca0fd9c300&amp;[email protected]&amp;firstname=Test&amp;lastname=Account&amp;ck=Q1BnzaRXAe_RfjhE&amp;vid=Q1BnzaRXAd3Rfik7&amp;cktime=87919&amp;cart=5257&amp;promocode=SAMPLE&amp;chrole=1014&amp;cjsid=0a0102621f435ef0d0d4b3cd49ab8b2db4e253c671eb" allowtransparency="true" border="0" onload="hideShipLoadImg()" style="display: block;"></iframe></div></div> This is the relevant Javascript: // Allow for shipper number update var shipNumDisplay=0; function enterShipNum() { if (shipNumDisplay == 0){ //odrSampl(); document.getElementById('placeshipnum').style.display="block"; document.getElementById('placeshipnum').innerHTML='<div id="shipnum"><div class="wrapper-x"> <a onclick="enterShipNum()" href="javascript:;" class="linkfooter" title="close window"> <img height="11" width="11" src="/c.659197/site/av-template/x-image-browser.gif" alt="close window" /> </a> </div><iframe onload="hideShipLoadImg()" scrolling="no" height="240" frameborder="0" width="190" border="0" allowtransparency="true" src="https://forms.netsuite.com/app/site/crm/externalleadpage.nl?compid=659197&formid=56&h=9b260d2f9bca0fd9c300&[email protected]&firstname=Test&lastname=Account&ck=Q1BnzaRXAe_RfjhE&vid=Q1BnzaRXAd3Rfik7&cktime=87919&cart=5257&promocode=SAMPLE&chrole=1014&cjsid=0a0102621f435ef0d0d4b3cd49ab8b2db4e253c671eb"></iframe></div>'; shipNumDisplay=1; } else { document.getElementById('placeshipnum').style.display="none"; document.getElementById('shipnum').parentNode.removeChild(document.getElementById('shipnum')); shipNumDisplay=0; } } function hideShipLoadImg(){ var shipiframe= document.getElementById('shipnum').getElementsByTagName('iframe')[0]; shipiframe.style.display = 'block'; shipiframe.parentNode.style.background = '#fff'; } This is most of the form inside the iframe although I don't think it's relevant: <form style="margin: 0pt;" onsubmit="return ( window.isinited &amp;&amp; window.isvalid &amp;&amp; save_record( true ) )" action="/app/site/crm/externalleadpage.nl" enctype="multipart/form-data" method="POST" name="main_form" id="main_form"> <div class="field name"> <label for="firstname">First Name <span class="required">*</span></label> <span class="input" id="firstname_fs"><span class="input" id="firstname_val">Test</span></span><input type="hidden" id="firstname" name="firstname" value="Test" onchange="nlapiFieldChanged(null,'firstname');"> </div> <div class="field name"> <label for="lastname">Last Name <span class="required">*</span></label> <span class="input" id="lastname_fs"><span class="input" id="lastname_val">Account</span></span><input type="hidden" id="lastname" name="lastname" value="Account" onchange="nlapiFieldChanged(null,'lastname');"> </div> <div id="ups" class="field"> <label for="custentity4">UPS # </label> <span id="custentity4_fs" style="white-space: nowrap;"><input type="text" id="custentity4" onblur="if (this.checkvalid == true) {this.isvalid=(validate_field(this,'text',false,false) &amp;&amp; nlapiValidateField(null,'custentity4'));} if (this.isvalid == false) { selectAndFocusField(this); return this.isvalid;}" name="custentity4" size="25" onfocus="if (this.isvalid == true || this.isvalid == false) this.checkvalid=true;" onchange="setWindowChanged(window, true);this.isvalid=(validate_field(this,'text',true,false) &amp;&amp; nlapiValidateField(null,'custentity4'));this.checkvalid=false;if (this.isvalid) {nlapiFieldChanged(null,'custentity4');;}if (this.isvalid) this.isvalid=validate_textfield_maxlen(this,6,true,true);if (!this.isvalid) { selectAndFocusField(this);}return this.isvalid;" class="input" maxlength="6"></span> </div> <div id="fedex" class="field"> <label for="custentity9">FedEx # </label> <span id="custentity9_fs" style="white-space: nowrap;"><input type="text" id="custentity9" onblur="if (this.checkvalid == true) {this.isvalid=(validate_field(this,'text',false,false) &amp;&amp; nlapiValidateField(null,'custentity9'));} if (this.isvalid == false) { selectAndFocusField(this); return this.isvalid;}" name="custentity9" size="25" onfocus="if (this.isvalid == true || this.isvalid == false) this.checkvalid=true;" onchange="setWindowChanged(window, true);this.isvalid=(validate_field(this,'text',true,false) &amp;&amp; nlapiValidateField(null,'custentity9'));this.checkvalid=false;if (this.isvalid) {nlapiFieldChanged(null,'custentity9');;}if (this.isvalid) this.isvalid=validate_textfield_maxlen(this,9,true,true);if (!this.isvalid) { selectAndFocusField(this);}return this.isvalid;" class="input" maxlength="9"></span> </div> <div class="field hidden"><input type="hidden" id="email" name="email" value="[email protected]"></div> <div class="field"><label class="submit" for="submitbutton"><span class="required">*</span> Indicates required fields.</label></div> <input type="submit" id="submitbutton" value="submit"> <!-- REQUIRED HIDDEN FIELDS FOR HTML ONLINE FORM --> <input type="hidden" value="659197" name="compid"><input type="hidden" value="56" name="formid"><input type="hidden" value="" name="id"><input type="hidden" value="9b260d2f9bca0fd9c300" name="h"><input type="hidden" value="-1" name="rectype"><input type="hidden" value="" name="nlapiPI"><input type="hidden" value="" name="nlapiSR"><input type="hidden" value="ShipValidateField" name="nlapiVF"><input type="hidden" value="" name="nlapiFC"><input type="hidden" value="/app/site/crm/externalleadpage.nl?compid=659197&amp;formid=56&amp;h=9b260d2f9bca0fd9c300&amp;[email protected]&amp;firstname=Test&amp;lastname=Account&amp;ck=Q1BnzaRXAe_RfjhE&amp;vid=Q1BnzaRXAd3Rfik7&amp;cktime=87919&amp;cart=5257&amp;promocode=SAMPLE&amp;chrole=1014&amp;cjsid=0a0102621f435ef0d0d4b3cd49ab8b2db4e253c671eb" name="whence"><input type="hidden" name="submitted"> <iframe height="0" style="visibility: hidden;" name="server_commands" id="server_commands" src="javascript:false"></iframe> <!-- END OF REQUIRED HIDDEN FIELDS FOR HTML ONLINE FORM --> </form>

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  • How do I cleanly design a central render/animation loop?

    - by mtoast
    I'm learning some graphics programming, and am in the midst of my first such project of any substance. But, I am really struggling at the moment with how to architect it cleanly. Let me explain. To display complicated graphics in my current language of choice (JavaScript -- have you heard of it?), you have to draw graphical content onto a <canvas> element. And to do animation, you must clear the <canvas> after every frame (unless you want previous graphics to remain). Thus, most canvas-related JavaScript demos I've seen have a function like this: function render() { clearCanvas(); // draw stuff here requestAnimationFrame(render); } render, as you may surmise, encapsulates the drawing of a single frame. What a single frame contains at a specific point in time, well... that is determined by the program state. So, in order for my program to do its thing, I just need to look at the state, and decide what to render. Right? Right. But that is more complicated than it seems. My program is called "Critter Clicker". In my program, you see several cute critters bouncing around the screen. Clicking on one of them agitates it, making it bounce around even more. There is also a start screen, which says "Click to start!" prior to the critters being displayed. Here are a few of the objects I'm working with in my program: StartScreenView // represents the start screen CritterTubView // represents the area in which the critters live CritterList // a collection of all the critters Critter // a single critter model CritterView // view of a single critter Nothing too egregious with this, I think. Yet, when I set out to flesh out my render function, I get stuck, because everything I write seems utterly ugly and reminiscent of a certain popular Italian dish. Here are a couple of approaches I've attempted, with my internal thought process included, and unrelated bits excluded for clarity. Approach 1: "It's conditions all the way down" // "I'll just write the program as I think it, one frame at a time." if (assetsLoaded) { if (userClickedToStart) { if (critterTubDisplayed) { if (crittersDisplayed) { forEach(crittersList, function(c) { if (c.wasClickedRecently) { c.getAgitated(); } }); } else { displayCritters(); } } else { displayCritterTub(); } } else { displayStartScreen(); } } That's a very much simplified example. Yet even with only a fraction of all the rendering conditions visible, render is already starting to get out of hand. So, I dispense with that and try another idea: Approach 2: Under the Rug // "Each view object shall be responsible for its own rendering. // "I'll pass each object the program state, and each can render itself." startScreen.render(state); critterTub.render(state); critterList.render(state); In this setup, I've essentially just pushed those crazy nested conditions to a deeper level in the code, hiding them from view. In other words, startScreen.render would check state to see if it needed actually to be drawn or not, and take the correct action. But this seems more like it only solves a code-aesthetic problem. The third and final approach I'm considering that I'll share is the idea that I could invent my own "wheel" to take care of this. I'm envisioning a function that takes a data structure that defines what should happen at any given point in the render call -- revealing the conditions and dependencies as a kind of tree. Approach 3: Mad Scientist renderTree({ phases: ['startScreen', 'critterTub', 'endCredits'], dependencies: { startScreen: ['assetsLoaded'], critterTub: ['startScreenClicked'], critterList ['critterTubDisplayed'] // etc. }, exclusions: { startScreen: ['startScreenClicked'], // etc. } }); That seems kind of cool. I'm not exactly sure how it would actually work, but I can see it being a rather nifty way to express things, especially if I flex some of JavaScript's events. In any case, I'm a little bit stumped because I don't see an obvious way to do this. If you couldn't tell, I'm coming to this from the web development world, and finding that doing animation is a bit more exotic than arranging an MVC application for handling simple requests - responses. What is the clean, established solution to this common-I-would-think problem?

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  • ASP.NET MVC 3 Client-Side Validation Summary with jQuery Validation (Unobtrusive JavaScript)

    - by Soe Tun
    When we were working with ASP.NET MVC 2, we needed to write our own JavaScript to get Client-Side Validation Summary with jQuery Validation plugin. I am one of those unfortunate people still stuck with .NET Framework Runtime 2.0 and .NET Framework 3.5; meaning I am still on ASP.NET MVC 2. So I will still keep on supporting by answering any question you may have with my original code.   Long awaited ASP.NET MVC 3 has been released, and it supports Client Side Validation Summary with jQuery out-of-the-box with new features like Unobtrusive JavaScript.   1. _Layout.cshtml Template Notice that I am using Protocol Relative URLs ( i.e., '//'.  Not 'http://' or 'https://' ) to reference script files and css files and you should use it too like that! However, please note that IE7 and IE8 will download the CSS files twice so use it with judgement. <!DOCTYPE html> <html> <head> <title>@ViewBag.Title</title> <link href="@Url.Content("~/Assets/Site.css")" rel="stylesheet" type="text/css" /> <link href="//ajax.googleapis.com/ajax/libs/jqueryui/1.8.9/themes/redmond/jquery-ui.css" rel="stylesheet" type="text/css" media="screen" /> </head> <body> @RenderBody() <script src="//ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js" type="text/javascript"></script> <script src="//ajax.googleapis.com/ajax/libs/jqueryui/1.8.9/jquery-ui.min.js" type="text/javascript"></script> <script src="//ajax.microsoft.com/ajax/jQuery.Validate/1.7/jQuery.Validate.min.js" type="text/javascript"></script> <script src="//ajax.aspnetcdn.com/ajax/mvc/3.0/jquery.validate.unobtrusive.min.js" type="text/javascript"></script> </body> </html>   2. MVC View Template There are 3 things you *must* do exactly to get Client Side Validation Summary working. (1)  You must declare your Validation Summary **inside** the `Html.BeginForm()` block like below. (2)  You must pass `excludePropertyErrors: false` to the  Html.ValidationSummary()  method. @using (Html.BeginForm()) { @Html.ValidationSummary(false, "Please fix these errors."); <!-- The rest of your View Template --> }   (3)  You have to put the following two elements in the `<appSettings />` block of your Web.config file. <add key="ClientValidationEnabled" value="true"/> <add key="UnobtrusiveJavaScriptEnabled" value="true"/>   That is all you need to do.  Simple, right? I will upload a sample project for download soon.  Please let me know if you run into some issues.     P.S: Without getting into too much technical details, I just wanted to let you know what I went through to get this to work. I had to look into the ASP.NET MVC 3 RTM Source Code and the jquery.validate.unobtrusive.js source. Initially, I thought I have to hack the jquery.validate.unobtrusive.js or something to get this to work. But after digging into MVC3 RTM source, I found out how to do it.

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