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  • While Mouse press event. Prototype JS or Javascript

    - by nahum
    Hi, I would like to know if someone knows how to make a function repeat over and over while the mouse is press, I don't know how to make it work. I know in prototype you can take events like $('id').observe("click",function(event){}) $('id').observe("leave",function(event){}) $('id').observe("change",function(event){}) //etc... but is something like $('id').observe("whilemousepress",function(event){}) :P //I know there is not any event in javascript but I would like to emulate. thanks...

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  • Add multiple entities to Javascript namespace from different files

    - by Brian M. Hunt
    Given a namespaces ns used in two different files: abc.js ns = ns || (function () { foo = function() { ... }; return { abc : foo }; }()); def.js // is this correct? ns = ns || {} ns.def = ns.def || (function () { defoo = function () { ... }; return { deFoo: defoo }; }()); Is this the proper way to add def to the ns to a namespace? In other words, how does one merge two contributions to a namespace in javascript? If abc.js comes before def.js I'd expect this to work. If def.js comes before abc.js I'd expect ns.abc to not exist because ns is defined at the time. It seems there ought to be a design pattern to eliminate any uncertainty of doing inclusions with the javascript namespace pattern. I'd appreciate thoughts and input on how best to go about this sort of 'inclusion'. Thanks for reading. Brian

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  • How to correctly load dependent JavaScript files

    - by Vaibhav Garg
    I am trying to extent a website page that displays google maps with the LabeledMarker. Google Maps API defines a class called GMarker which is extended by the LabeledMarker. The problem is, I cant seem to load the LabeledMarker script properly, i.e. after the Google API loads and I get the 'GMarker not defined' error. What is the correct way to specify the scripts in such cases? I am using ASP.NET's ClientScript.RegisterClientScriptInclude() first for the google API url and then immediately after with the LabeledMarker script file. The initial google API loader writes further script links that load the actual GMarker class. Shouldnt all those scripts be executed before the next script block(LabeledMarker script) is processed. I have checked the generated HTML and the script blocks are emitted in the right order. <script src="google api url" type="text/javascript"></script> ... (the above scripts uses document.write() etc to append further script blocks/sources) ... <script src="Scripts/LabeledMarker.js" type="text/javascript"></script> Once again, the LabeledMarker.js seems to get executed before the google API finishes loading.

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  • Javascript onclick() event bubbling - working or not?

    - by user1071914
    I have a table in which the table row tag is decorated with an onclick() handler. If the row is clicked anywhere, it will load another page. In one of the elements on the row, is an anchor tag which also leads to another page. The desired behavior is that if they click on the link, "delete.html" is loaded. If they click anywhere else in the row, "edit.html" is loaded. The problem is that sometimes (according to users) both the link and the onclick() are fired at once, leading to a problem in the back end code. They swear they are not double-clicking. I don't know enough about Javascript event bubbling, handling and whatever to even know where to start with this bizarre problem, so I'm asking for help. Here's a fragment of the rendered page, showing the row with the embedded link and associated script tag. Any suggestions are welcomed: <tr id="tableRow_3339_0" class="odd"> <td class="l"></td> <td>PENDING</td> <td>Yabba Dabba Doo</td> <td>Fred Flintstone</td> <td> <a href="/delete.html?requestId=3339"> <div class="deleteButtonIcon"></div> </a> </td> <td class="r"></td> </tr> <script type="text/javascript">document.getElementById("tableRow_3339_0").onclick = function(event) { window.location = '//edit.html?requestId=3339'; };</script>

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  • What is the best way to include Javascript?

    - by Paul Tarjan
    Many of the big players recommend slightly different techniques. Mostly on the placement of the new <script>. Google Anayltics: (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); })(); Facebook: (function() { var e = document.createElement('script'); e.async = true; e.src = document.location.protocol + '//connect.facebook.net/en_US/all.js'; document.getElementById('fb-root').appendChild(e); }());: Disqus: (function() { var dsq = document.createElement('script'); dsq.type = 'text/javascript'; dsq.async = true; dsq.src = 'http://' + disqus_shortname + '.disqus.com/embed.js'; (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(dsq); })(); (post others and I'll add them) Is there any rhyme or reason for these choices or does it not matter at all?

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  • When should JavaScript generate HTML?

    - by VirtuosiMedia
    I try to generate as little HTML from JavaScript as possible. Instead, I prefer to manipulate existing markup whenever I can and only generate HTML when I need to dynamically insert an element that isn't a good candidate for using Ajax. This, I believe, makes it far easier to maintain the code and quickly make changes to it because the markup is easier to read and trace. My rule of thumb is: HTML is for document structure, CSS is for presentation, JavaScript is for behavior. However, I've seen a lot of JS code that generates mounds of HTML, including entire forms and content-heavy modal dialogs. In general, which method is considered best practice? In what circumstances should JavaScript be used to generate HTML and when should it not?

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  • Best way of Javascript web development in Netbeans (Hot deployment)

    - by marcelocbf
    I'm beginning Javascript development and as a beginner in JavaScript I make a lot of mistakes. The way I'm developing is very counter-productive because every mistake I fix I have to shutdown Glassfish, re-build the app and re-deploy it. My app is a Java back-end with REST services and the Html, JavaScript, CSS for the frontend. Everything is packed in a .ear file. As of right now, I'm just working with the frontend but I do have to make this whole process to update the files. My question is ... is there a better way of doing this? Can somebody tell how do you guys work in a similar setup to do the everyday development?

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  • What's wrong with JavaScript

    - by ts01
    There is a lot of buzz around Dart recently, often questioning Google motivations and utility of Dart as replacement for JavaScript. I was searching for rationale of creating Dart rather than investing more effort in ECMAScript. In well known leaked mail its author is saying that Javascript has historical baggage that cannot be solved without a clean break. But there is only one concrete example given (apart of performance concerns) of "fundamental language problems", which is an existence of a single Number primitive So, my questions are: How an existence of a single Number primitive can be a "fundamental problem"? Are there other known "fundamental problems" in JavaScript?

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  • How can I become a better Javascript programmer?

    - by Elliot Bonneville
    I've been programming with Javascript for a few years now, and I guess I'm okay at it. I can solve pretty much any problem I come across, and while my solutions may not be that great, they work. However, I want to become a better Javascript programmer. I'd like to learn all the best-practices, tricks of the trade, things to avoid, and anything else I should know so that my code will be 100% optimized and as readable as possible. How do I do that? I realize this question has been loosely asked before here, but the OP was something of beginner. I want to get into the more advanced side of Javascript programming with this question. Is this possible or am I just being way too impatient? Do I just need to spend loads of time programming?

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  • Netbeans 7.01 in 12.04 repository, no javascript support

    - by Danielinux
    Hi I've installed Netbeans 7.0.1 from ubuntu 12.04 repository, i'm having many issues, The most important is that I cannot have help in writing javascript. Each .js file appear as a usual text file and even javascript sintax in jsp pages appear as normal text. I've already checked in tools -- options -- misc-- files and i cannot find there the .js association and the text/javascript mime-type. Another issue, really awfull, is that I cannot access CVS server if i do not run Netbeans as a root user. Someone had the same troubles i listed above? Have you some tips for solving them avoiding to install a newer version from Netbeans website? thanks in advance

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  • Common Javascript mistakes that severely affect performance?

    - by melee
    At a recent UI/UX MeetUp that I attended, I gave some feedback on a website that used Javascript (jQuery) for its interaction and UI - it was fairly simple animations and manipulation, but the performance on a decent computer was horrific. It actually reminded me of a lot of sites/programs that I've seen with the same issue, where certain actions just absolutely destroy performance. It is mostly in (or at least more noticeable in) situations where Javascript is almost serving as a Flash replacement. This is in stark contrast to some of the webapps that I have used that have far more Javascript and functionality but run very smoothly (COGNOS by IBM is one I can think of off the top of my head). I'd love to know some of the common issues that aren't considered when developing JS that will kill the performance of the site.

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  • How to have a maintainable and manageable Javascript code base

    - by dade
    I am starting a new job soon as a frontend developer. The App I would be working on is 100% Javascript on the client side. all the server returns is an index page that loads all the Javascript files needed by the app. Now here is the problem: The whole of the application is built around having functions wrapped to different namespaces. And from what I see, a simple function like rendering the HTML of a page can be accomplished by having a call to 2 or more functions across different namespace... My initial thought was "this does not feel like the perfect solution" and I can just envisage a lot of issues with maintaining the code and extending it down the line. Now I would soon start working on taking the project forward and would like to have suggestions on good case practices when it comes to writing and managing a relatively large amount of javascript code.

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  • Differences between C# and Javascript for Unity [closed]

    - by vrinek
    Apart from the language differences (class-based vs prototypical, strong vs weak typing), what are the differences between using Javascript and using C# when developing games in Unity3D? Is there a noticable performance difference? Is the javascript code packaged as-is? And if yes, does this help the game's modability? Is it possible to use libraries developed for one language while developing in the other one? Is it possible to mix the two languages in the same Unity project by coding some parts in C# and others in Javascript? The next couple of questions are time-specific so feel free to ignore or remove: If libraries are not cross-functional, which language has better library support from the game development perspective? Which language has better game dev specific resources available (books, websites, forums)?

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  • Cannot add DataTables.net javascript into Joomla 1.5

    - by mfmz
    I've been having this problem where i couldn't add Datatables.net javascript into my Joomla article. I have been trying to include it through Jumi. To say that my editor strips of the tag is somewhat not right as I have been able to execute Google Chart API in Joomla which also uses javascript. Any clue why? The code is as below : <link href="//datatables.net/download/build/nightly/jquery.dataTables.css" rel="stylesheet" type="text/css" /> <script src="http://code.jquery.com/jquery-1.9.1.min.js"></script> <script src="//datatables.net/download/build/nightly/jquery.dataTables.js"></script> <script type="text/javascript"> $(document).ready( function () { var table = $('#example').DataTable(); } ); </script>

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  • Is obtrusive JavaScript ever ok?

    - by Petah
    I was thinking that if all the users of a website are required to have JavaScript enabled, Is it ok to use obtrusive JavaScript? I'm all for progressive enhancement, but whats the point when an advanced web applications bounces users at the door if they have an old browser or JavaScript disabled? We have a very slim target audience, and we can tell our target audience what browser and plugins/functionality they are required to have. So you my question is, is mixing JS and HTML alright in that case. Like using onclick attributes.

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  • Why make JavaScript class based?

    - by Carnotaurus
    JavaScript is a prototype language. To turn it into a class based language adds little value? I am not talking about best-practice here. I remember reading an article from way back, which claimed that the class-based worldview is perceivably more flawed than the one of prototypes. My summary can be found here: http://carnotaurus.tumblr.com/post/3248631891/class-based-javascript-or-not. I am resisting to use the class-based jQuery add-on and other attempts at faciliating class-based JavaScript. Peer pressure is strong but is there a stronger theoretical or practical reason why I stop resisting?

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  • Does heavy JavaScript use adversely impact Googleability?

    - by A T
    I've been developing the client-side for my web-app in JavaScript. The JavaScript can communicate with my server over REST (HTTP)[JSON, XML, CSV] or RPC (XML, JSON). I'm writing writing this decoupled client in order to use the same code for both my main website and my PhoneGap mobile apps. However recently I've been worrying that writing the website with almost no static content would prevent search-engines (like Google) from indexing my web-page. I was taught about this restriction about 4 years ago, which is why I'm asking here, to see if this restriction is still in-place. Does heavy JavaScript use adversely impact Googleability?

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  • How do you unit test your javascript

    - by Erin
    I spend a lot of time working in javascript of late. I have not found a way that seems to work well for testing javascript. This in the past hasn't been a problem for me since most of the websites I worked on had very little javascript in them. I now have a new website that makes extensive use of jQuery I would like to build unit tests for most of the system. My problems are this. Most of the functions make changes to the DOM in some way. Most of the functions request data from the web server as well and require a session on the service to get results back. I would like to run the test from either a command line or a test running harness rather then in a browser. Any help or articles I should be reading would be helpful.

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  • Can desktop applications be written using javascript?

    - by jase21
    Is it currently possible to write desktop applications using javascript, html, css? Possible solutions: Use Adobe AIR runtime and program in js. But no, if I'm using AIR, the AS3 suites it the most. So not a good option. GWT: No because it uses Java and then convert it to js or what ever. Pyjamas: Interesting. But I'm currently focusing on JavaScript. So I don't want to use python and cross-compile to js. Run a local server and use the browser in full screen mode. Sort of okay, but still its the same browser thing. And difficult to distribute. So what is the best option? I'm excited about node.js which is the main reason for looking into JavaScript. Otherwise I would have choose python.

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  • pop up html as javascript string instead of hidden div for seo [closed]

    - by user1324762
    Possible Duplicate: How bad is it to use display: none in CSS? I have heard that using display:none or visibility:hidden css properties are not a very good idea for seo purposes. I have about 4 different pop up windows to display and each one has about 20 words inside it. I can create hidden divs. Another option is to store div html elements as javascript string. In this way pop up html elements will be generated from javascript string. This will be still faster than using ajax since the data is static. Is this method absolutely safe for SEO? P.S.: I was just asking about similar question on http://stackoverflow.com/questions/12389075/storing-data-in-javascript-array-for-further-use, but this one is different, it is about static data and about SEO.

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  • How do I know that I'm good at JavaScript

    - by lKashef
    I'm an ASP.NET developer and I won't get any job because of my JavaScript skills. I started reading about JavaScript in articles and tutorials but I still didn't pick a book to read. But what I'm trying to understand. For example If you want to test your ASP.NET skills you firstly start learning the basics from a book, course, etc. And to increase my knowledge and experience, I would build a website of any given idea and start to face troubles and learn as I go. but what can I do with JavaScript! .. how am I supposed to know how good I am at it !? First Things First: I'm sorry guys, I've been facing some troubles to Comment or UpVote on the website but It's finally over, so Thanks everybody for your help =)

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  • How to run/test JavaScript? [closed]

    - by user702
    I'm reading David Flanagan's "JavaScript: The Definitive Guide, 6th ed". It only actually tells users how to run JS code on page 311, where users are told of the following solutions: "Client-side JavaScript code is embedded within HTML documents in four ways: Inline, between a pair of <script> and </script> tags From an external file specified by the src attribute in a <script> tag In an HTML event handler attribute, such as onclick or onmouseover In a URL that uses the special javascript: protocol." I was wondering what professional JS developers use to write and test their code: Do they use a good text editor with syntax high-lighting + autocompletion, hit F5 in the browser to reload the page every time they make a change, and use some add-on in the browser to investigate errors? Or are there full-fledged IDE's similar to MS VisualStudio for non-web languages?

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  • Javascript Dropdownbox

    - by edgar
    I have a dropdownbox (percent), a input box(price) and a input box (total) When you select a percent from the dropdown, it multiplies the value of the selected dropdown times the price value and input the result in the total input box. This works well with one input box, but what I am trying to do is to use asp and when you select a percent from the drop down box, it will calcualate the rest of the total fields. Here is the code that I have so far <%@LANGUAGE="VBSCRIPT" CODEPAGE="1252"% <% Dim Recordset1 Dim Recordset1_numRows Set Recordset1 = Server.CreateObject("ADODB.Recordset") Recordset1.ActiveConnection = MM_pricdsn_STRING Recordset1.Source = "SELECT * FROM AMFLIB.MBCWCPP where cwfvnb = 1090101 and cwaitx between '0025' and '0025AT'" Recordset1.CursorType = 0 Recordset1.CursorLocation = 2 Recordset1.LockType = 1 Recordset1.Open() Recordset1_numRows = 0 %> <% Dim Repeat1__numRows Dim Repeat1__index Repeat1__numRows = -1 Repeat1__index = 0 Recordset1_numRows = Recordset1_numRows + Repeat1__numRows %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> Javascript Untitled Document <script type="text/javascript"> function startCalc4(){ interval = setInterval("calc4()",1); } function calc4(){ one = document.form1.prcbook.value; two = document.form1.percent.value; document.form1.total.value = (one * 1) * (two * 1); } function stopCalc4(){ clearInterval(interval); } </script> <style type="text/css"> <!-- #Layer1 { position:absolute; left:26px; top:49px; width:150px; height:24px; z-index:1; } #Layer2 { position:absolute; left:36px; top:22px; width:166px; height:22px; z-index:2; } #Layer3 { position:absolute; left:19px; top:24px; width:174px; height:21px; z-index:3; } --> </style> <script type="text/javascript"> function showhideText(box,id) { var elm = document.getElementById(id) elm.style.display = box.checked? "inline":"none" } </script> </head> <body> <form id="form1" name="form1" method="post" action=""> <p> </p> <p>&nbsp;</p> <p> <input type="text" name="itm" value="<%=(Recordset1.Fields.Item("CWAITX").Value)%>"/> <select name="percent" onFocus="startCalc4();"onBlur="stopCalc4();"> <option value="0">select</option> <option value="1.10">10%</option> <option value="1.25">25%</option> </select> </p> <p> <% If Not REcordset1.EOF Then Do while not REcordset1.EOF %> <input type="text" name="qty" value="<%=(Recordset1.Fields.Item("CWAJQT").Value)%>"onfocus="startCalc4();" onblur="stopCalc4();"/> <input name="prcbook" type="text" value="<%=(Recordset1.Fields.Item("CWKDVA").Value)%>"onfocus="startCalc4();" onblur="stopCalc4();"/> <input type="text" name="total" value=""/> </p> </form> </body> </html> <% REcordset1.MoveNext Loop End If %>

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  • jQuery capture all changes to named inpt on a form

    - by Brian M. Hunt
    I'm trying to determine when any of a set of named input/select/radio/checked/hidden fields in a form change. In particular, I'd like to capture when any changes are made to fields matching jQuery's selector $("form :input"), and where that input is has a name attribute. However, the form isn't static i.e. some of the fields are dynamically added later. My initial thought is to keep track of when new named elements matching :input are added, and then add an event handler, like this: function on_change() { alert("The form element with name " + $(this).attr("name") + " has changed"); } function reg_new_e_handler(input_element) { input_element.change(on_change); } However, I'm quite hopeful I can avoid this with some jQuery magic. In particular, is there a way to register an event handler in jQuery that would handle input elements that match the following: $("form :input").filter( function () { $(this).attr("name") } ).change(on_change); However, have this event set update whenever new input elements are added. I've thought that it may be possible to capture keyup event on the form node with $("form").keyup(on_change), but I'm not so sure how one could capture change events. I'd also like this to capture keyup events. Thank you for reading. Brian

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  • Oracle Customer Experience events in EMEA: Empowering People, Powering Brands

    - by Richard Lefebvre
    What makes for an exceptional customer experience? What are the organizational, technical and mindset prerequisites for making it a reality? And how ca a company sustain it? => Join one of the following Oracle's Customer Experience events (open to partners and customers) accross Europe <= Amsterdam - 27th September 2012  Milano - 27th September 2012 Madrid - 10th October 2012 London - 18th October 2012 Paris - 25th October (link to registration to be open soon) Other dates & locations to be relased -> Gain insight on what challenges must be addressed and how CX solutions can help deliver great customer experiences across the customer lifecycle and every interaction point. -> Learn how customer experience drives measurable business value by accelerating new customer acquisition, maximizing customer retention, improving operational efficiency and increasing total sales. This is your chance to transition your customer experience management strategies into the 21st century to create tomorrow's experiences today. This interactive event will deliver you the opportunity to learn from and network with your peers and experts.

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