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  • Using a regex to determine domain using JavaScript

    - by jerome
    Hi All, If, as here at work, we have test, staging and production environments, such as: http://test.my-happy-work.com http://staging.my-happy-work.com http://www.my-happy-work.com I am writing some javascript that will redirect the browser to a url such as: http://[environment].my-happy-work.com/my-happy-video I need to be able to determine the current environment that we are in. There is the possibility that I will currently be at a url such as: http://[environment].my-happy-work.com/my-happy-path/my-happy-resource I want to be able to grab the window.location but strip it of everything but: http://[environment].my-happy-work.com And then append to that string + "/" + "my-happy-video". I am not skilled with regex, but I suppose there would be a way to parse the window.location up to the ".com" Thoughts? Thanks!

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  • Properties of JavaScript objects

    - by clothears
    In my JavaScript, I'm using an object as an associative array. It always has the property "main", and may have others. So, when I create it I might do this: var myobject = new Object (); myobject["main"] = somevalue; Other properties may be added later. Now, at some moment I need to know whether myobject has just the one property, or several, and take different actions depending (I'm only referring to properties I've created). So far all I've found to do is something like: flag = false; for (i in myobject) { if (i=="main") continue; flag = true; break; } and then branch on flag. Or: for (i in myobject) { if (i=="main") continue; do_some_actions (); break; } These approaches work but feel to me like I've overlooked something. Is there a better approach?

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  • Client side page permissions - Javascript / jquery / cookies / other?

    - by Ozaki
    TLDR Using plain HTML / Javascript. Want to block access to some pages (doesn't have to be super secure just to stop some peeking eyes). I thought of simply doing this by setting a cookie for each page they are allowed to visit with a value of true but thats a bit messy. Although it would work. Is there a way to set an array of values to a cookie so I can read the cookie and if a name of a page is in there then allow access with an IF statement or so on each of my pages. If they dont have the cookie just to replace my #content (entirepage) to "sorry no" etc. For example: $.cookie("Access","page1, page2, page3",{ expires: 1 }); Am already using JQuery, Jquery cookie. etc. I am up for anyway of doing this cookie idea is just an example So what do you think would be the best / most efficient way of managing this?

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  • Javascript callback for multiple ajax calls

    - by Jisaak
    My lack of javascript knowledge is getting me in trouble again. I think this should be a fairly easy problem to fix but I cant figure it out. Situation: I want to make three ajax calls in a click event. Each ajax call does a distinct operation and returns back data that is needed for a final callback. The calls themselves are not dependent on one another, they can all go at the same time, however I would like to have a final callback when all three are complete. $('#button').click(function() { fun1(); fun2(); fun3(); //now do something else when the requests have done their 'sucess' callbacks. }); var fun1= (function() { $.ajax({/*code*/}); }); var fun2 = (function() { $.ajax({/*code*/}); }); var fun3 = (function() { $.ajax({/*code*/}); });

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  • Refering to javascript instance methods with a pound/hash sign

    - by Josh
    This question is similar to http://stackoverflow.com/questions/736120/why-are-methods-in-ruby-documentation-preceded-by-a-pound-sign I understand why in Ruby instance methods are proceeded with a pound sign, helping to differentiate talking about SomeClass#someMethod from SomeObject.someMethod and allowing rdoc to work. And I understand that the authors of PrototypeJS admire Ruby (with good reason) and so they use the hash mark convention in their documentation. My question is: is this a standard practice amongst JavaScript developers or is it just Prototype developers who do this? Asked another way, is it proepr for me to refer to instance methods in comments/documentation as SomeClass#someMethod? Or should my documentation refer to `SomeClass.someMethod?

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  • Json select a specific item out for editing with javascript

    - by minus4
    I have the following JSon: {"DPI":"66.8213457076566", "width":"563.341067", "editable":"True", "pricecat":"6", "numpages":"2", "height":"400", "page":[{"filename":"999_9_1.jpg", "line":[{"test":"test 1",lineid:22}, {"test":"test 2",lineid:22}, {"test":"test 3",lineid:22}, {"test":"test 4",lineid:22}, {"test":"blank",lineid:22}]}, {"filename":"999_9_2.jpg", "line":[]}]}# i can do most things with lines like measurements.page[0].line[0].lineid; but what i am really stuck with is when i want to edit a specific line but i only have lineid available and not the line number in the array, for example: measurements.page[0].line[0].test = "new changed value"; however i dod not know the line number I.E 0 line[0] is there a way for me to get the line number of a line that has a lineid value of say 22 ???? and all within javascript thanks

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  • valueOf() vs. toString() in Javascript

    - by brainjam
    In Javascript every object has a valueOf() and toString() method. I would have thought that the toString() method got invoked whenever a string conversion is called for, but apparently it is trumped by valueOf(). For example, the code var x = {toString: function() {return "foo"; }, valueOf: function() {return 42; }}; window.console.log ("x="+x); window.console.log ("x="+x.toString()); will print x=42 x=foo This strikes me as backwards .. if x were a complex number, for example, I would want valueOf() to give me its magnitude (so that zero would become special), but whenever I wanted to convert to a string I would want something like "a+bi". And I wouldn't want to have to call toString() explicitly in contexts that implied a string. Is this just the way it is?

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  • Javascript Problem

    - by Tareq
    I am trying to show a script in a div tag. But in the div tag the script does not run. Here is my Code: <div id="div0" align="right"> <script type="text/javascript"> <!-- alert("Hi"); --> </script> </div> It does not work for me. Please anybody tell me, what is the problem?

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  • Javascript: variable in outer function not changed by inner function

    - by Weng-Lock Mok
    I am having a small issue with what I believe is probably my misunderstanding of Javascript closures. I have this piece of code -- getStdOpts: function(tbl, filt) { var vals = new Array(); this.srvs.getStdOptions( { tbl: tbl }, { 'ok': function(rsp) { for (var i in rsp) { vals.push({ value: rsp[i].id, text: rsp[i].descr }); } } } ); return vals; } In essence, although the inner function inside the getStdOptions call ('ok': function...) pushes new values into the vals array, when accessed from outside the call, the vals array is empty. When accessed from within the inner function, vals contains all the elements as expected. Would really appreciate any help I can get on this matter.

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  • PHP and Javascript Webservice

    - by ajithperuva
    By using javascript am trying to cal a webservice.That service return response as follows.. <envelope> <date_time> Test', callbackTest Wednesday, March 31, 2010 2:28:55 AM </date_time> </envelope> I am using firefox as browser to execute the application.Thats why after creating the object of XMLHttpRequest try to read as follows _xmlDoc.responseXML.getElementsByTagName('date_time')[0].firstChild.nodeValue; But it is showing output like undefined.please help me to solve this problem.What is actual problem ?

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  • javascript callback after loop

    - by RobertPitt
    Hey guys, Iv'e just started a new Wordpress blog and i have started to build the JavaScript base! the issue im having is funnction a fucntion that loops several variables and includes the required JS libraries, what i need to do is execute the callback when the loop is finished! Heres my code! var Utilities = { Log : function(item) { if(console && typeof console.log == 'function') { //Chrome console.log(item); } }, LoadLibraries : function(callback) { $.each(Wordpress.required,function(i,val){ //Load the JS $.getScript(Wordpress.theme_root + '/js/plugins/' + val + '/' + val + '.js',function(){ // %/js/plugins/%/%.js Utilities.Log('library Loaded: ' + val); }); }); callback(); } } And the usage is like so! Utilities.LoadLibraries(function(){ Utilities.Log('All loaded'); }); Above you see the execution of callback() witch is being executed before the files are in the dom! i need this called at the end of every library inclusion!

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  • Resizing image size using javascript

    - by Jean
    Hello, I am trying to resize the image using javascript, but I am getting errors var y; var y = new Image(); y.src = s; var wd = y.width/600; var ht = y.height/600; if(ht>wd){ var rw=round(wd * (1/ht)); var hw1 = ht * (1/ht); var hw=round(hw1); } else { var rw1 = (wd) * (1/wd); rw=round(rw1); hw=round(ht * (1/wd)); } I am getting errors saying Message: Object expected Line: 27 Char: 2 Code: 0 Where line 27 is rw=round(rw1); Thanks Jean

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  • Sony Bravia JavaScript API & Emulator

    - by Kevin Williams
    I recently purchased a Sony Bravia TV that comes with Internet capability built in. It supports a number of internet capable widgets and web video streaming apps for sites like youtube, twitter & various yahoo! offerings. I'd like to hack on the SDK, but the only version I can find is Japanese. Is there an English version of the SDK? Where can I find some tutorials/examples? Japanese SDK Documentation (English Layout & JavaScript API pdfs included)

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  • Externalize Javascript in YAP

    - by Haseeb Khan
    I am working on a Yahoo! App which requires certain external Javascript Frameworks to be loaded and used. Also in the Yahoo! App Best Practices Guide, it is also mentioned that the sources should be externalized, however, externalization isn't working for me. I am using the standard procedure to load the external JS file like the following: <script src="http://www.google.com/js/nxsl.1.js"></script> But the above statement is giving me an error that external sources are not allowed. Is there any way to use external JS files as I don't want to include all of my JS Login inline, it doesn't make sense to me and majorly my code won't be re-usable. Any thoughts ?

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  • jQuery/Javascript framework efficiency

    - by Russell
    My latest project is using a javascript framework (jQuery), along with some plugins (validation, jquery-ui, datepicker, facebox, ...) to help make a modern web application. I am now finding pages loading slower than I am used to. After some js profiling (thanks VS2010!), it seems a lot of the time is taken procesing inside the framework. Now I understand the more complex the ui tools, the more processing needs to be done. The project is not yet at a large stage and I think would be average functions. At this stage I can see it is not going to scale well. I noticed things like the 'each' command in jQuery takes quite a lot of processing time. Have others experienced some extra latency using JS frameworks? How do I minimise their effect on page performance? Are there best practices on implementation using JS frameworks? Thanks

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  • How to include javascript/css once with Struts 1.x

    - by Felix
    If this is the wrong approach, please suggest something better, but my current efforts have been trying to find something that exists for a single page load, such that I can cache which javascript/css files have been included so as to only include them once. I thought in a TagSupport subclass I could use (HttpServletRequest)pageContext.getRequest().getParameterMap().put(srcKey,true) but the request is per jsp, not per page load so it was a failure. I could set up a filter in web.xml, but it seems I would have to search the response for duplicates and rewrite the response...pain. I could try to store things in the session, but there are headaches with clearing values... Any help would be appreciated.

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  • Help needed in Javascript + Image + HREF

    - by Bragaadeesh
    Hi, <a href="#"><img src="http://www.google.com/intl/en_ALL/images/logo.gif" onClick="alert('hi')"/></a> In the above code, i am appending a javascript onclick method to the image tag. When I click the image once and I press back, it should go back to the page it came from. Instead its staying on the same page. Is there any way I can avoid that? (probably set something else instead of href="#"). The reason I set href="#" is to make my cursor turn into hand, other than that it has no use. This is occuring in FIREFOX, IE it works fine Please help. Thanks.

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  • Javascript/jQuery height calculation

    - by danit
    Im looking for a way, in javascript, to calculate the size of the browser (px) then calculate the size of a <div> taking away 50px from that full screen size: E.g. Browser screen size: 800px (Height) Existing <div> that is always 50px (Height) Leaves 750px (Height) for the remaining <div> to fill the page. Then take that 750px and apply it as inline style: <div style="height: 50px"> <img src="banner.png" /> </div> <div style="height: x"> This fills the remainder of the page </div>

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  • ESRI frameworks: java vs javascript

    - by Luke
    I'm about to develop a web mapping application with ESRI Products like ArcGIS Server and Image Server. I can't find a good comparison between the Java Web ADF and the Javascript Framework. They're of course different because one is a full environment and the other is only client side but it's much more concise and the step to start is minimal. Another problem is that the Java Web ADF is not compatible with our current application server (JBoss 4.2.2) and require an old 4.0.2 version. Someone out there has experience that can help me? Many thanks.

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  • Javascript regex only matching entire url as typing

    - by dt
    I'm trying to use javascript to find all URLs in a textarea as the person is typing (onkeyup). The problem that I'm having is in finding a regex to match the entire URL, I need it only to match all the URL's in the text area that are complete URLs. All of the existing regex expressions that I find through Google and through my own experiementing seem to match as soon as the user has typed the first part of the pattern. So, for example, if I'm typing and then start to type http://w, all of a sudden, it will match. I need to find a regex that will match and return an array of all the urls that are in the textarea, while also not matching unless the person has completed typing the full URL. Hopefully that makes sense! Thank you!

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  • Debugging dynamically added Javascript code

    - by gilm
    One of the programmers I worked with has something similar in code: var head = document.getElementsByTagName("head")[0]; var e = document.createElement("script"); e.type = "text/javascript"; var b = "function moo() { alert('hello'); }"; e.appendChild(document.createTextNode(b)); head.appendChild(e); moo(); This is all good and dandy, but I would like to step into moo(), and firebug just can't do that. I know I can rip the whole thing apart, but I reallllly don't want to touch it and his code works :) Any ideas how I can debug this with Firebug? Cheers

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  • Facebook Javascript SDK: First time logging in

    - by Brandon
    I'm currently integrating Facebook with my website using the Javascript SDK. I've got the login portion working well. The only thing I'm trying to figure out is if there is a way to tell if it was the first time the user logged into my website using their Facebook credientials. I tried subscribing to auth.login, but that didn't seem to have any information about that. Is there a flag anywhere that lets me know this? Or another way to go about looking this up? I realize I could do some server side code, but I'd prefer to stay away from that if possible. Thanks in advance, Brandon

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  • How to create Server-side Progress indicator in Javascript

    - by Eli
    Hey Guys, I want to create a section in my site, where a user has a few simple update buttons. Each of these update buttons will be going to the server, and will do a long crunching behind the scene. While the server crunches data, I want the user to have a some kind of progress indicator, like progress bar or textual percentage. I'm using jQuery as my javascript library, and CodeIgniter (PHP) as the server-side framework, if it's important... What I was thinking about is using PHP's flush() function to report progress status to jQuery, but I'm not sure that jQuery's ajax functions are reading the output before it's complete... So any advice/explanation would be useful and helpful! Thanks :)

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  • Is there another way of setting the array values in javascript

    - by Dennis
    Hello. Again I'm still new to this javascript thing, so just would like to know if there is another way of setting the values of an array (just like declaring it); //correct way of declaring an array and reusing var adata = new Array('1','2','3'); //reusing of variable adata[0] = '4'; adata[1] = '5'; adata[2] = '6' This part is my question; I want to declare the values of the array just like declaring them to minimize the number of lines; //array declaration var data = new Array('1','2','3'); //reusing of variable data = ['4','5','6']; ---> (as an example) I get an error msg "Invalid assignment left-hand side" is this possible? If so, what is the correct syntax? I hope I'm making sense. Thanking you in advance.

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  • Match d-M-Y with javascript regex how?

    - by bakerjr
    Hi, my date formatting in PHP is d-M-Y and I'm trying to match the dates with a javascript regex: s.match(new RegExp(/^(\d{1,2})(\-)(\w{3})(\-)(\d{4})$/)) To be used with the jQuery plugin, tablesorter. The problem is it's not working and I'm wondering why not. I tried removing the dashes in my date() formatting (d M Y) and tried the ff and it worked: s.match(new RegExp(/^\d{1,2}[ ]\w{3}[ ]\d{4}$/)); My question is what is the correct regex if I'm using dashes on PHP's date() i.e. d-M-Y? Thanks!

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