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  • Execute a Application On The Server Using JavaScript

    - by Nathan Campos
    I have an application on my server that is called leaf.exe, that haves two arguments needed to run, they are: inputfile and outputfile, that will be like this example: pnote.exe input.pnt output.txt They are all on the same directory as my home page file(the executable and the input file). But I need that a JavaScript could run the application like that, then I want to know how could I do this.

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  • how to resolve/normalize URLs in GWT/Javascript?

    - by Limbic System
    Given two URLs, how can I resolve one of them against the other? I'm trying to emulate Java's URI.resolve(), which does not exist in GWT's emulation library. I've had to implement this manually, which, as you might expect has been very error-prone. Is there a GWT or Javascript library for resolving or normalizing URLs?

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  • Pick random property from a Javascript object

    - by Bemmu
    Suppose you have a Javascript object like {'cat':'meow','dog':'woof' ...} Is there a more concise way to pick a random property from the object than this long winded way I came up with: function pickRandomProperty(obj) { var prop, len = 0, randomPos, pos = 0; for (prop in obj) { if (obj.hasOwnProperty(prop)) { len += 1; } } randomPos = Math.floor(Math.random() * len); for (prop in obj) { if (obj.hasOwnProperty(prop)) { if (pos === randomPos) { return prop; } pos += 1; } } }

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  • Javascript disabling my postback

    - by LoveMeSomeCode
    I have an ASP.NET checkbox, and I want to run some javascript before it posts back. Something like: <asp:CheckBox ID="chkSelected" runat="server" AutoPostBack="True" OnCheckedChanged="chkSelected_CheckedChanged" /> but I want to run a JS confirm dialog when the user click it, and if they were UNCHECKING it, I'd like to ask them if they're sure, and if so, postback and run my serverside code. If they say No, don't postback at all. Anyone know of an 'easy' way to do this?

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  • cross-domain javascript

    - by rutherford
    I am producing a javascript-based widget. Nothing complex just a few document.writes... When I place it inline in the page it renders fine in all browsers. When I place it externally and load it via it fails to render in Firefox and IE but not Chrome. Anyone know why and a possible workaround?

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  • Validating javascript decimal numbers

    - by Click Upvote
    I'm using the following regexp to validate numbers in my javascript file: var valid = (val.match(/^\d+$/)); It works fine for whole numbers like 100, 200, etc, however for things like 1.44, 4.11, etc, it returns false. How can I change it so numbers with a decimal are also accepted?

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  • javascript simple object creation test: opera leaks?

    - by joe
    Hi, I am trying to figure out certain memory leak conditions in javascript on a few browsers. Currently I'm only testing FF 3.6, Opera 10.10, and Safari 4.0.3. I've started with a fairly simple test, and can confirm no memory leaks in Firefox and Safari. But Opera just takes memory and never gives it back. What gives? Here's the test: <html> <head> <script type="text/javascript"> window.onload = init; //window.onunload = cleanup; var a=[]; function init() { var d = document.createElement('div'); d.innerHTML = "page loading..."; document.body.appendChild(d); for (var i=0; i<400000; i++) { a[i] = new Obj("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"); } d.innerHTML = "PAGE LOADED"; } function cleanup() { for (var i=0; i<400000; i++) { a[i] = null; } } function Obj(msg) { this.msg=msg; } </script> </head> <body> </body> </html> I shouldn't need the cleanup() call on window.unload, but tried that also. No luck. As you can see this is simple JS, no circular DOM links, no closures. I monitor the memory usage using 'top' on Mac 10.4.11. Memory usage spikes up on page load, as expected. In FF and Safari reloading the page does not use any further memory, and all memory is returned when the window (tab) is closed. In Opera, memory spikes on load, and seems to also spike further on each reload (but not always...). But regardless of reload, memory never goes back down below the initial load spike. I had hoped this was a no-brainer test that all browsers would pass, so I could move on to more "interesting" conditions. Am I doing something wrong here? Or is this a known Opera issue? Thanks! -joe

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  • Javascript obfuscation and extreme situation in production solving

    - by faya
    Hello, I have a few questions regarding JavaScript obfuscation on client side. First question: What is the best tool or best three tools which ones you could suggest for this operation? Second question: How developers should debug such code (in example with firebug) when extreme situation appears in the production if the code is obfuscated? P.S. - I know that it's bad practice to debug in production, but we had some emergencies and experienced sometimes such situations. Thanks for any help!

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  • JavaScript Question for IE6

    - by Lijo
    Hi Team, I have a javascript requirement. I will pass a comma separated string into a function. I need to ensure that it contains only integers (without decimals) and the value is less than 2147483648. Could you please help me ? Note:: I am working on IE 6 Thanks Lijo

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  • Image editor component in Flex / JavaScript

    - by nobby
    Hi everyone, I'm looking for a simple Flex or JavaScript based image editing component which can be embedded in a web application. It shouldn't be a web service but rather a component that I can download and customize (i18n etc.). I only need some basic features: most important is cropping, optional features would be rotating and adjusting brightness/contrast. Basically something like splashup.com, but as an open source application rather than a web-service. Thanks a lot in advance for any hints! -- Andreas

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  • Newbie want to learn: Javascript + HTML5 localstorage

    - by Alai
    So I'm searching for a good crash course on localstorage and interacting with it in Javascript. I want to build a to-do list webapp with some extra functionality but it would be just for 1 user. I don't want to mess with php/mysql and have the server doing anything. Links to tutorials would be best :-D

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  • request parameter using jquery/javascript

    - by Bunny Rabbit
    is it possible to stop the submission of a form,after submit button has been clicked and get the action attribute and the request parameters of the submission using javascript(preferably jQuery) ? I want to get the action and the parameter so that the it can be submitted to an alternate location ,what i am tryin to do is try writing a proxy website.

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  • Escape apostrophes inside double quoted strings (Javascript)

    - by George Sheppard
    Say i have a string that i need to evaluate in javascript such as : window.some_class.update( 'Runner', 'update_runner', '{"runner":{"id":"1","name":"Nin's Lad" } }'); In order for eval() to evaluate it, i need to escape the apostrophe in runner_name (Nin's Lad). Is this possable with regex? I dont want to escape the single quotes around Runner and update_runner. I'd just like to escape any single quotes inside double quotes. Thanks,

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  • close other HTML window by javascript function

    - by lusey
    hello i need a popup window to appear to the user but without parent widow ! but this is impossible so i think that I may have to make the popup close the parent apter it appear, but how ? i tried this in the popup: <BODY align="center" valign="center" onload="javascript:window.opener='x';window.close();"> but it closed the popup window itself ! any idea to make the popup close its parent ?

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  • JavaScript Used As PHP

    - by Nathan Campos
    I'm now thinking to stabilish my code on Javascript, and begin to do all on it, but I want to know about it's security and flexibility compared to PHP. I want to know too, if it can be sucessfully used to develop things like forum boards, full web-sites and things like this, as PHP does.

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  • Using JavaScript's split to chop up a string and put it in two arrays

    - by Pieter
    I can use JavaScript's split to put a comma-separated list of items in an array: var mystring = "a,b,c,d,e"; var myarray = mystring.split(","); What I have in mind is a little more complicated. I have this dictionary-esque string: myvalue=0;othervalue=1;anothervalue=0; How do I split this so that the keys end up in one array and the values end up in another array?

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