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  • Javascript to convert Markdown/Textile to HTML (and, ideally, back to Markdown/Textile)

    - by Horace Loeb
    There are several good Javascript editors for Markdown / Textile (e.g.: http://attacklab.net/showdown/, the one I'm using right now), but all I need is a Javascript function that converts a string from Markdown / Textile - HTML and back. What's the best way to do this? (Ideally it would be jQuery-friendly -- e.g., $("#editor").markdown_to_html()) Edit: Another way to put it is that I'm looking for a Javascript implementation of Rails' textilize() and markdown() text helpers

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  • Notifying iFrame page from Firefox extension?

    - by Crashalot
    I'm writing a Firefox extension and need to notify an iFrame page of certain events. The iFrame page is contained within a sidebar created by the extension, and this iFrame page is controlled by me. When I load the iFrame page, the extension code needs to send a notification and trigger something to happen within the iFrame page. To accomplish this, I'm creating an event from the extension Javascript and firing the event, which the iFrame page is listening to. Unfortunately, when invoking document.createEvent(), this error pops up (copied, with the quotes, straight out of Firebug): Operation is not supported" code: "9 Any clues on the error, or suggestions on how to trigger something in an iFrame page from the extension Javascript? Thanks!

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  • Calling javascript from objective-c code

    - by Infinity
    Hello! I found a lots of ways to call objective-c code from javascript, but I want to call the javascript code from objective-c. Last time I submitted a HTML FORM from objective-c, and now I wan't to call a javascript method. What do you think, is there any way to call it and get the response? I am interested in any solution, but I started to think and I think I need to send a html call or something like this, but I am not sure about this because the javascript is client side code, so maybe I need to process it from my objective-c code. What do you think about this?

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  • Confusion: Ajax Framework vs JavaScript Framework ?

    - by Rachel
    I was under the impression that jQuery is JavaScript Framework, but when am searching for AJAX Framework it appears that jQuery is also being suggested as best AJAX Framework. Reference: Best Ajax Framework My Question: What is Ajax Framework and how it is different from JavaScript Framework like jQuery ? What are best known Ajax Framework ? What are best known JavaScript Framework ?

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  • Hidden Features of JavaScript?

    - by Allain Lalonde
    What "Hidden Features" of JavaScript do you think every programmer should know? After having seen the excellent quality of the answers to the following questions I thought it was time to ask it for JavaScript. Hidden Features of C# Hidden Features of Java Hidden Features of ASP.NET Hidden Features of Python Hidden Features of HTML Hidden Features of PHP Even though JavaScript is arguably the most important Client Side language right now (just ask Google) it's surprising how little most web developers appreciate how powerful it really is.

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  • interaction between javascript (desktop application) and C#

    - by Roman Dorevich
    Hello. I am writing for my desktop some application for handling some services. I wrote in C# an application that calculates something (lets call it cl.exe) I created a .bat file that starts the cl.exe. I want to call that .bat file from my javascript so I WShell.Run(**.bat). 2 question: The javascript program will not continue till the cl.exe will end ? (It is synchronized ?) The cl.exe returns a value. How can the javascript take it (It is a javascript program that call .bat file that wrapp the execution of the cl.exe) ? Thanks

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  • 48-bit bitwise operations in Javascript?

    - by randomhelp
    I've been given the task of porting Java's Java.util.Random() to JavaScript, and I've run across a huge performance hit/inaccuracy using bitwise operators in Javascript on sufficiently large numbers. Some cursory research states that "bitwise operators in JavaScript are inherently slow," because internally it appears that JavaScript will cast all of its double values into signed 32-bit integers to do the bitwise operations (see https://developer.mozilla.org/En/Core_JavaScript_1.5_Reference/Operators/Bitwise_Operators for more on this.) Because of this, I can't do a direct port of the Java random number generator, and I need to get the same numeric results as Java.util.Random(). Writing something like this.next = function(bits) { if (!bits) { bits = 48; } this.seed = (this.seed * 25214903917 + 11) & ((1 << 48) - 1); return this.seed >>> (48 - bits); }; (which is an almost-direct port of the Java.util.Random()) code won't work properly, since Javascript can't do bitwise operations on an integer that size.) I've figured out that I can just make a seedable random number generator in 32-bit space using the Lehmer algorithm, but the trick is that I need to get the same values as I would with Java.util.Random(). What should I do to make a faster, functional port?

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  • ANTLR JavaScript Target

    - by kunalsawlani
    Hello, I have been using ANTLR to generate a parser + tree grammar for a mark up language with Java target which works fine. Now I am trying to get the target in JavaScript to use it in my web browser. However, I have not been able to locate any good documentation on how to go about doing this. I am using eclipse with ANTLR IDE, and when i specify the language as JavaScript, I get the following errors. Multiple markers at this line (10): internal error: group JavaScript does not satisfy interface ANTLRCore: mismatched arguments on these templates [treeParser(grammar, name, scopes, tokens, tokenNames, globalAction, rules, numRules, bitsets, labelType, ASTLabelType, superClass, members, filterMode)] (10): internal error: java.util.NoSuchElementException: no such attribute: filterMode in template context [treeParser] If anyone could help me out with this or point me to some material which I could read about the JavaScript target with ANTLR, it would be great. Thanks

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  • IE Specific JavaScript

    - by Banderdash
    This feels like a stupid question, or one that could be answered with a little trial and error and some Googleing--but I assure you I have tried both and several ideas and am not getting the results I'm after. Here are my JS includes for a site: <!-- JavaScript --> <script type="text/javascript" src="http://code.jquery.com/jquery-latest.min.js"></script> <script type="text/javascript" src="js/accordian.js"></script> <!--[if IE 7]><script type="text/javascript" src="js/ie-accordian.js"></script><![endif]--> I'm simply trying to deliver the ie-accordian.js to IE 7 and accordian.js to all other browsers. Just not having any luck keeping IE 7 from using accordian.js as opposed to the one created especially for it. Any thoughts?

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  • Javascript incapable of getting element's max-height via element.style.maxHeight

    - by Zane
    I am making a simple accordion menu in javascript. I'd like to be able to set the compact and expanded heights for the elements via the css max-height and min-height values. For some reason, when I try to retrieve the min-height and max-height of the elements in javascript for animation purposes, I get an empty string rather than, for instance, "500px" like it should. The max-height value is set in css, e.g. #id { min-height: 40px; max-height: 500px; } is all set up, but when I put a debugging mechanism in my javascript such as alert( item.style.minHeight ); it pops up an empty alert box. This happens in Firefox 3.6.2 and IE 8. Does anybody know why javascript refuses to be able to get an element's minHeight and maxHeight?

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  • How can I write reusable Javascript?

    - by RenderIn
    I've started to wrap my functions inside of Objects, e.g.: var Search = { carSearch: function(color) { }, peopleSearch: function(name) { }, ... } This helps a lot with readability, but I continue to have issues with reusabilty. To be more specific, the difficulty is in two areas: Receiving parameters. A lot of times I will have a search screen with multiple input fields and a button that calls the javascript search function. I have to either put a bunch of code in the onclick of the button to retrieve and then martial the values from the input fields into the function call, or I have to hardcode the HTML input field names/IDs so that I can subsequently retrieve them with Javascript. The solution I've settled on for this is to pass the field names/IDs into the function, which it then uses to retrieve the values from the input fields. This is simple but really seems improper. Returning values. The effect of most Javascript calls tends to be one in which some visual on the screen changes directly, or as a result of another action performed in the call. Reusability is toast when I put these screen-altering effects at the end of a function. For example, after a search is completed I need to display the results on the screen. How do others handle these issues? Putting my thinking cap on leads me to believe that I need to have an page-specific layer of Javascript between each use in my application and the generic methods I create which are to be used application-wide. Using the previous example, I would have a search button whose onclick calls a myPageSpecificSearchFunction, in which the search field IDs/names are hardcoded, which marshals the parameters and calls the generic search function. The generic function would return data/objects/variables only, and would not directly read from or make any changes to the DOM. The page-specific search function would then receive this data back and alter the DOM appropriately. Am I on the right path or is there a better pattern to handle the reuse of Javascript objects/methods?

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  • Pro JavaScript programmer interview questions

    - by WooYek
    What are good questions to determine applicant is really a pro JavaScript developer? Questions that can distinguish if someone is not an ad-hoc JavaScript programmer, but is really doing professional JavaScript development, object-oriented, reusable, and maintainable.

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  • ASP .NET MVC; return HTML along with JavaScript

    - by effkay
    I have a partial view which renders a table. On page load, I am using JQuery to perform Zebra Stripping on it. Whenever ajax refreshes the table, DOM elements are updated, but since JQuery code to do the Zebra Stripping is not executed; table looks ugly. I have tried adding Javascript in my partial view if( Request.IsAjaxRequest() ) return PartialView( "AdministrationGrid", Users ); but javascript is not executed. I guess the only way to execute the Javascript as reply is to do: return JavaScript( "alert( '' )" ); Anyone with an idea how can I achieve this? I thought about JQuery Live, but it is used to bind itself to events.

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  • disable javascript in a UIWebView

    - by adrien Coye
    Hi, Is there a way to disable the Javascript in a UIwebView ? I have memory consumption problem, and I'm looking for a trick here because it seems to not be be possible with the official stuff. Maybe a call with javascript can stop javascript itself, i don't know. Thanks in advance for any help, Adrian C

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  • DateTime to javascript date

    - by AJ
    Hello, From another answer on Stackoverflow is a conversion from Javascript date to .net DateTime: long msSinceEpoch = 1260402952906; // Value from Date.getTime() in JavaScript return new DateTime(1970, 1, 1) + new TimeSpan(msSinceEpoch * 10000); But how to do the reverse? DateTime to Javascript Date ? Thanks, AJ

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  • C# to Javascript: Custom Event Delegation?

    - by James Simpson
    I'm working on a project in Unity3D with Javascript, and I'm trying to implement the SmartFoxServer API (http://smartfoxserver.com) in Javascript instead of their example C# code. I've gotten most of it converted correctly, but I am still getting an error at runtime with the following line involving delegation to a C# file that is in the API (SFSEvent.cs). C# original: SFSEvent.onConnection += HandleConnection; Javascript (or whatever I've turned it into): SFSEvent.onConnection = Delegate.Combine(HandleConnection); Error: InvalidCastException: Cannot cast from source type to destination type.

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  • Is it possible to programatically catch JavaScript SyntaxErrors?

    - by Matty
    I don't think that this is doable, but wanted to throw it out to the community to confirm my suspicions. Let's say you're writing a program in another language like Python, PHP, or ASP. This program is intended to build another program written in JavaScript. However, the first program is unfortunately not immune to errors. So, occasionally, the program which builds the JavaScript program does some funky stuff and outputs a syntax error in the JavaScript source. Now some user goes and loads the program and it essentially halts, because the web browser running it can't properly parse the JavaScript. This user is probably not going to be happy. I wouldn't be. This brings me to my question. Is it possible to write an error handler that would catch these kind of syntax problems allowing the application to fail gracefully? Here's an example: <html> <head> <script type="text/javascript" charset="utf-8"> window.onerror = errorHandler; function errorHandler(a,b,c) { alert('horray! No wait, Booo!'); } vara jfs; </script> </head> <body> Can this be done? </body> </html> or <html> <head> <script type="text/javascript" charset="utf-8"> try { vara jfs; } catch (e) { alert('horray! No wait, Booo!'); } </script> </head> <body> Can this be done? </body> </html>

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  • Javascript error when attempting to open a modal window in a modal window

    - by The Sheek Geek
    The application is running on a windows server 2003 box using asp.net 2.0 and is an IE specific web app. There is a button that opens a form in an iframe using showModalDialog(...) from a function call located in the javascript. Here is an example of the fucntion: function ShowBusinessHoursSubForm( source ) { var retval = window.showModalDialog("htm/" + locLocaleID + "/SubFormHostFrame.htm", source, "dialogWidth:265px;dialogHeight:261px;help:no;scroll:no;status:no;"); } The host frame is loading an aspx page which contains the actual form that is being used. On the form that is opened there is a button that, when clicked, submits changed to the form. However, if no changed were made before the form was submitted, another modal window pops up stating that there were no changed to the form. This modal window is opened through registration of some javascript in the button click event. The code is as follows (C#): string l_S_ErrorScript = "<script type='text/javascript' language='javascript'>window.showModalDialog('htm/" + l_S_Culture + "/NotChangedErrorDialog.htm', '../../" + l_S_SkinPath + "', 'dialogWidth:310px;dialogHeight:145px;scroll:no;help:no;status:no;');</script>"; if(!m_Page.ClientScript.IsStartupScriptRegistered("ErrorScript")) { m_Page.ClientScript.RegisterStartupScript(this.GetType(), "ErrorScript", l_S_ErrorScript); } When the button is clicked and this dialog needs to appear the following javascript error appears: Error: Object doesn't support this property or method The weird thing is, if I access the application locally and try it everything works fine, but accessing from another computer causes the error. Also, depending on what server (we have many servers for testing all with windows server 2003) the error may not occur on another computer either. These computers are running the same software version using the same version of IE with the same settings. I'm inclined to believe that there is some configuration issue somewhere, but with the settings being the same it is hard to tell. I cannot really change how the app works or the technologies used either. Anyone have any ideas as to what may be causing this?

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  • Escape Quote - javascript, struts 2

    - by Ahmed Salah
    I read some struts2 variable in javascript as follows: <javascript type="text/javascript"> var data='<s:property value="simulationInfos"/>'; <javascript> If my simulationInfos contains single quote ', I get the error : unexpected identifier. therefore, I tried to escape the quote as follows: var data='<s:property value="simInfos" escapeJavaScript="true"/>'; and var data='<s:property value="simInfos" escapeHTML="true"/>'; I get the error: Attribute escapeJavaScript (or escapeHTML) invalid for tag property according to TLD. Any Idea?

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  • How can I easily maintain a cross-file JavaScript Library Development Environment

    - by John
    I have been developing a new JavaScript application which is rapidly growing in size. My entire JavaScript Application has been encapsulated inside a single function, in a single file, in a way like this: (function(){ var uniqueApplication = window.uniqueApplication = function(opts){ if (opts.featureOne) { this.featureOne = new featureOne(opts.featureOne); } if (opts.featureTwo) { this.featureTwo = new featureTwo(opts.featureTwo); } if (opts.featureThree) { this.featureThree = new featureThree(opts.featureThree); } }; var featureOne = function(options) { this.options = options; }; featureOne.prototype.myFeatureBehavior = function() { //Lots of Behaviors }; var featureTwo = function(options) { this.options = options; }; featureTwo.prototype.myFeatureBehavior = function() { //Lots of Behaviors }; var featureThree = function(options) { this.options = options; }; featureThree.prototype.myFeatureBehavior = function() { //Lots of Behaviors }; })(); In the same file after the anonymous function and execution I do something like this: (function(){ var instanceOfApplication = new uniqueApplication({ featureOne:"dataSource", featureTwo:"drawingCanvas", featureThree:3540 }); })(); Before uploading this software online I pass my JavaScript file, and all it's dependencies, into Google Closure Compiler, using just the default Compression, and then I have one nice JavaScript file ready to go online for production. This technique has worked marvelously for me - as it has created only one global footprint in the DOM and has given me a very flexible framework to grow each additional feature of the application. However - I am reaching the point where I'd really rather not keep this entire application inside one JavaScript file. I'd like to move from having one large uniqueApplication.js file during development to having a separate file for each feature in the application, featureOne.js - featureTwo.js - featureThree.js Once I have completed offline development testing, I would then like to use something, perhaps Google Closure Compiler, to combine all of these files together - however I want these files to all be compiled inside of that scope, as they are when I have them inside one file - and I would like for them to remain in the same scope during offline testing too. I see that Google Closure Compiler supports an argument for passing in modules but I haven't really been able to find a whole lot of information on doing something like this. Anybody have any idea how this could be accomplished - or any suggestions on a development practice for writing a single JavaScript Library across multiple files that still only leaves one footprint on the DOM?

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  • how to close popup using javascript with xml formatting

    - by Michael Robinson
    I bought this program that created a pretty nice imageuploader flash script however I can't get the Javascript function close window to close the popup and redirect the original page. here is the XML piece that defines the url's: <urls urlToUpload="upload.php?" urlOnUploadSuccess="http://www.home.com/purchase.html" urlOnUploadFail="http://www.home.com/tryagain.html" urlUpdateFlashPlayer="http://www.home.com/flashalternative.html" jsFunctionNameOnUpload=""/> This last line calls a javascript function on upload. The problem is I don't know what to call and where to put it. Here is the HTML file that is the popup: <HEAD> <title>Baublet Uploader</title> <script type="text/javascript" src="swfobject.js"></script> </HEAD> <BODY> <!-- Q-ImageUploader www.quadroland.com --> <div id="QImageUploader"> Flash Player stuff here </div> <script type="text/javascript"> // <![CDATA[ var so = new SWFObject("q_image_uploader.swf", "imageuploader", "650", "430", "9", "#FFFFFF"); so.addParam("scale", "noscale"); so.addParam("salign", "TL"); so.addVariable("AdditionalStringVariable","pass additional data here"); so.write("QImageUploader"); // ]]> </script> I found this Closing script I thought might work: <script language="javascript"> function close_window(page) { window.opener.location.href=page setTimeout(function(){window.close()},10); } </script> Does this go into the Popup HTML page above or would it be a separate close.js file in the root? Thanks, I'm really confused.

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