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  • [JavaScript] Global variables across multiple files

    - by Goro
    Hello, A bunch of my JavaScript code is in an external file called helpers.js. Inside the HTML that calls this JavaScript code I find myself in need of knowing if a certain function from helpers.js has been called. I have attempted to create a global variable by defining: var myFunctionTag = true; In global scope both in my HTML code and in helpers.js. Heres what my html code looks like: <html> ... <script type='text/javascript' src='js/helpers.js'></script> ... <script> var myFunctionTag = false; ... //I try to use myFunctionTag here but it is always false, even though it has been se t to 'true' in helpers.js </script> Is what I am trying to do even doable? Thanks,

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  • javascript hide/unhide, but want an arrow to point down/up on hide/unhide

    - by user1305810
    I have a simple hide/unhide div section using simple JavaScript. I need to have an arrow image, which will toggle the content visibility when clicked, and I want the little arrow to toggle between right/down positions when the content is hidden and unhidden. HTML content: <a href="javascript:showOrHide();"><img src="Image_Files/Copyright.png" alt="BioProtege Inc" border="0" /></a> <img src="Image_Files/Copyright_Arrow_Hidden.png" alt="Arrow" border="0" /> <div id="showorhide"> Copyright 2012+ BioProtege-Inc.Net | LG Fresh Designz <br /> Contact Us @ [email protected] </div> JavaScript content: function showOrHide() { var div = document.getElementById("showorhide"); if (div.style.display == "block") { div.style.display = "none"; } else { div.style.display = "block"; } }

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  • How to make a secure game in javascript ?

    - by rnaud
    Hello, I'm working on games using javascript some html and css, and I was wondering if there was any way to secure the game so that the user can't just call game.php?result=victory to finish the game and earn some point. As of right now here are the solution I have. For a chance game, start the page with the result already in place, win or loose, then just do some animations to show it, but all the score and win/loose stuff is done server-side. For a battle game, just get the action from the javascript call, and do the damage calculation, reaction of the oponent on the server and just send back the data. but the last solution imply that I will have to send actions each time the user do anything. This might work for a turn by turn battle game, but I think it would be to slow for any other kind of game. So my question is, is there some kind of secure way I can prep my javascript to secure the infomation sent.

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  • Interacting with RESTful API's via Javascript?

    - by Alex
    Hi there, to start off, I know C++, C#, Python, some Ruby, and basic Javascript. Anyway, my question revolves around how to interact with RESTful API's via Javascript. I haven't been able to find any good examples on various websites, and so I've come here. So my basic question is: How do I interact with RESTful API's via JS? And where can I find out how to implement OAuth in JS? I know how to get my keys and such, just not how to actually code them in. Below is an example of a twitter API status update run from my MAC terminal with curl: curl -u username:password -d "my tweet" http://api.twitter.com/1/statuses/update.json How can I implement this in Javascript (preferably with OAuth authentication)? This would at least start me going in the right direction. Thanks so much!!

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  • JavaScript For Loop in XSL document

    - by Nagendra
    Hello All, I have a peculiar problem with having a JavaScript for loop in XSL document. Here it goes:: I am calling a JavaScript function on the click of a CheckBox. Following is what I wanted to do in the javascript function :: function SeelctAll() { for(var cnt = 0; cnt < 100; cnt++) { //Business Logic here. } } For this I replaced < with < and tried. I got an error saying "Object Expected". I then enclosed the whole function inside Any help on this would be greatly appreciable.

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  • how to hook up default beforeunload event on an aspx page ?

    - by Nikhil Vaghela
    I have a custom web part placed on one of the application page in SharePoint. This page it seems already have a function which gets executed on windows beforeunload javascript event. My problem is that i too need to execute some client side code (to prompt user for any unsaved changes in my web part) on windows beforeunload event. How can i achieve this ? I mean let the default event be fired as well as call my function also ? Appreciate any help. Nikhil.

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  • Javascript String Length Differs From PHP mb_strlen

    - by TheOnly92
    I use document.getElementById("text").value.length to get the string length through javascript, and mb_strlen($_POST['text']) to get the string length by PHP and both differs very much. Carriage returns are converted in javascript before getting the string length, but I guess some characters are not being counted. For example, [b]15. Umieszczanie obrazka z logo na stronie zespolu[/b] This block of text is calculated 57 in javascript and 58 in PHP. When the text gets long, the difference increases. Is there any way to overcome this?

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  • How do you redeploy javascript in Idea when using a Tomcat configuration

    - by Jonny Leeds
    I'm working on a java/javascript webapp that runs on tomcat. We're working with IDEA and I've managed to get debugging set up for both the client and server code at the same time, which is great. I did have hot redeployment of the javascript set up when running Tomcat manually, however I find when running Tomcat through IDEA this doesnt work as it's setting stuff up somewhere in my users folder. I was going to just set up a deployment configuration to go to that folder but I can't see any of the javascript files in there. Is it possible to get the best of both worlds and have debugging and automatic deployment working together?

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  • Evaluating php generated javascript "inline"?

    - by talkingnews
    If you look at the source of this page http://kingston.talking-newspapers.co.uk/ you will see a large amount of inline javascript near the top. I don't really want all this extra stuff floating around in my page source, I'd much rather get it off into a script tag, and then I can minify it and all sorts. If I call it as a php file, this SHOULD work in theory, I just end the js file extension with php instead, and in the header I put the following: header("Content-type:application/x-javascript"); but... a lot of the php variables used to generate the playlist within the javascript are setup at the beginning of the main index.php file, and in calling this php-generated js playlist file like this, it seems to evaluate it entirely separately, so it's full of errors. The only way round it I can think of is to have the page write a file, then immediately read it in. The other thing is, the playlist is likely to change often and dynamically, so I think I need to get minify to NOT cache it?

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  • IFrame causing javascript code to not execute

    - by Claudio Redi
    Does anyone know why this code doesn't work. This means, the alert is NOT fired <iframe/> <script type="text/javascript">alert('hello');</script> While this code with the alert BEFORE the Iframe works perfeclty. This means the alert is fired <script type="text/javascript">alert('hello');</script> <iframe/> Seems that no javascript placed after the iframe is executed, I don't find any logic to this.

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  • Best placement for javascript in Asp.net MVC app that heavily uses partial views

    - by KallDrexx
    What is the best place for javascript that is specific to a partial view? For example, if I have a partial view (loaded via ajax call) with some divs and I want to turn those divs into an accordian, would it be better put the $("#section").accordion() in script tags inside of the partial view, or in a .js file in the function that retrieves that partial view and inserts it into the DOM? Obviously, common methods I will be keeping in a .js file, however I am more talking about javascript very specific to the partial view itself. Most things I find on the net seem to say to put all javascript into a separate .js but nothing addresses the idea of partial views.

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  • What type of data is this JavaScript code!?

    - by SolidSnakeGTI
    Hello, Well, I'm completely new to JavaScript. Can you please tell me what type of data is this JavaScript code: var options = { sourceLanguage: 'en', destinationLanguage: ['hi', 'bn', 'fa', 'gu', 'kn', 'ml', 'mr', 'ne', 'pa', 'ta','te','ur'], shortcutKey: 'ctrl+g', transliterationEnabled: true }; I've reviewed JavaScript arrays, but it doesn't seem to be a traditional array. Still don't know if it's some kind of arrays or another data type!! Additionally, is there any way to set individual elements to that data type such as setting array elements individually. Thanks in advance

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  • Prototype Library use of !! operator

    - by Rajat
    Here is a snippet from Prototype Javascript Library : Browser: (function(){ var ua = navigator.userAgent; var isOpera = Object.prototype.toString.call(window.opera) == '[object Opera]'; return { IE: !!window.attachEvent && !isOpera, Opera: isOpera, WebKit: ua.indexOf('AppleWebKit/') > -1, Gecko: ua.indexOf('Gecko') > -1 && ua.indexOf('KHTML') === -1, MobileSafari: /Apple.*Mobile/.test(ua) } })(), This is all good and i understand the objective of creating a browser object. One thing that caught my eye and I haven't been able to figure out is the use of double not operator !! in the IE property. If you read through the code you will find it at many other places. I dont understand whats the difference between !!window.attachEvent and using just window.attachEvent. Is it just a convention or is there more to it that's not obvious?

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  • HTML/Javascript change div content

    - by Rob
    HI, I have simple HTML code with some javascript, it looks like: <html> <head><script type="text/javascript">...</script></head> <body> <input type="radio" name="radiobutton" value="A" onClick="changeDivContent()"> <input type="radio" name="radiobutton" value="B" onClick="changeDivContent()"> <div id="content"></div> </body> </html> I just wanted to be able change div's content (it's inner html) with selecting one of "A" or "B" radio buttons, but div#content does not have javascript attribute "value", so I am asking how it can be done. Thank you!

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  • Rails i18n and routes in javascript

    - by StefanS
    Sometimes it would be really handy to have the Rails localization files available in JavaScript. Same is true for for the routes helpers. I found these two plugins which are exactly doing this: Exposing i18n to JavaScript: http://github.com/fnando/i18n-js Rails Routes in JavaScript: http://tore.darell.no/pages/javascript_routes My questions: Are there any other plugins / gems doing similar things like the two above? What's the right approach in Rails? Meta tag? Additional data- attributes? Thanks for any input!

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  • Using Server side method from Javascript without AJAX

    - by Aswin Ramakrishnan
    I have a tricky problem. I am in a situation where I need to use a method defined in a .cs file from a javascript function. The problem is we are using .NET 1.1 and AJAX cannot be used for the application. Also, I will need to pass a string from the javascript to the server side method. The page where I am implementing the javascript is a .as Any ideas? I have tried doing a post back and creating a RaisePostBack event handler method (both in the .aspx page and the .ascx user control) but no luck. It will be greatly appreciated if someone could help me out with the problem.

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  • When is JavaScript's eval() not evil?

    - by Richard Turner
    I'm writing some JavaScript to parse user-entered functions (for spreadsheet-like functionality). Having parsed the formula I could convert it into JavaScript and run eval() on it to yield the result. However, I've always shied away from using eval() if I can avoid it because it's evil (and, rightly or wrongly, I've always thought it is even more evil in JavaScript because the code to be evaluated might be changed by the user). Obviously one has to use eval() to parse JSON (I presume that JS libraries use eval() for this somewhere, even if they run the JSON through a regex check first), but when else, other than when manipulating JSON, it is OK to use eval()?

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  • debug javascript in release mode with yui compressions

    - by mickyjtwin
    In our build scripts, we are using YUI compressor to minify/compress javascript and css files. As this combines the js into one file, it needs to be referenced in the Master Layout script, e.g. First question is what is best way to use both, so that if we are developing (in debug mode) it will reference each js file individually? Second question, is once on production, would there be any steps/solution to debugging the javascript on the production server, i.e. conditionallly load the javascript files based on setting a "debug=true" setting in either js or .net?

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  • Javascript Call function serverside

    - by Dusty
    I need to call a Javascript function from the server side in Client side. I looked and didn't find any way how to do it. I looked also over AJAX but can't figure it out. I am using ASP ( clasic) not .net . I need to call the function in client-side with a variable that comes from the client-side. Please help me!!! Thanks a million !!! I am using a FlashMovies that is sending a value to a Javascript function through ExternalInterface class. The function in javascript receiving it is gAnswer(result) and in this function i would need to have something like : Server side: function saveResult(result) {code to be saved on the server goes here } Client side : function gAnswer (result) { saveResult(result) } <- THis is the part i dont know how to do. The function gAnswer is being called when the flash movie finished by itself. Would you be able to provide some code on how to ? thanks to each one of you who helped me =)

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  • Calling a function of en external javascript file

    - by strakastroukas
    Hello. In general... How can I make a call on a function of an external javascript file? More specific... In the head tag i have <script type="text/javascript" src="JScript/FontSize.js"></script> The external javascript file, (that i would like to call) FontSize.js contains the following functions. function checkCookie() function setCookie(c_name, value, expiredays) function getCookie(c_name) function increaseFontSize() function decreaseFontSize() The FontSize.js is located at the ~/Jscript/ directory I guess the body on load should contain something like <body onload="/JScript/Fontsize.js/checkCookie()"> Of course nothing works as it should because, i do not know how to make the call to a function to an external js file

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  • javascript arrays: adding entries

    - by Lyon
    Hi, I'm not sure how I would do this in Javascript. I want to create an array that would contain any number of error messages from my form. I read on websites that you define the key for that array when adding new entries. // Javascript var messages = new Array(); messages[0] = 'Message 1'; How can I add entries into my array using a similar method I normally do in PHP // PHP $messages = array(); $messages[] = 'Message 1'; // automatically assigned key 0 $messages[] = 'Message 2'; // automatically assigned key 1 Is it possible to emulate that in Javascript? I don't want to have to define the number of entries in my array as it can vary. Thanks for helping me out on this very basic js question. -Lyon

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  • Using PHP retrieved variables in Javascript

    - by mouthpiec
    Hi, I will use the following javascript to display a Google Map Window in a webpage. <script language = 'javascript'"> function initialize() { if (GBrowserIsCompatible()) { var map = new GMap2(document.getElementById("map_canvas")); map.setCenter(new GLatLng(35.904173, 14.433396), 16); map.setUIToDefault(); } } </script> I would like to read the coordinates from a db, to generate the map using PHP, but how is it possible to use the retrieved(eg $lat = xxx and $lon = yyy) values into the javascript?

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  • Generating unobtrusive JS

    - by nico
    I have read quite a bit about unobtrusive JS and how to generate it and all that jazz... My problem is this: I have a website that heavily relies on mod_rewrite, so essentially all the pages requests are sent to index.php that generates the main structure of the page and then includes the appropriate page. Now, there are different sections in the site and each section uses different Javascript functions (e.g. for different AJAX requests). Now, if I just were to attach a function to the onload of the page obviously the thing would not work, as I do not have to initialise the same things for each page... so what is the best way to handle this situation? I hope the situation is clear, I'll be happy to clarify if needed

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  • Do jQuery and JavaScript have different namespaces?

    - by Brett
    I have this code in jQuery.. $(document).ready(function(){ var fieldCounter = 0; ... I have a jQuery function that increments this value. This works, but I can't access this value on the page from a non-jQuery function? The reverse is also true, if I scope it in JavaScript e.g. <script type="text/javascript"> var fieldCounter = 0; I can access it from javascript but jQuery can't view it? I'm probably doing something really dumb?

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  • twitter's profile widget include in a separate javascript file

    - by raulricardo21
    Hi stackoverflowers, I'm just trying to put the custom twitter's profile widget on my page, but I like to put the code in a separate javascript's file. so, I don't know how to do that. I mean, I put this on head tag <script type="text/javascript" src="http://widgets.twimg.com/j/2/widget.js"></script> the create a div for the widget, an put the rest of the code in another javascript new TWTR.Widget(json_twitter_options).render().setUser('username').start(); But, how to "put" the result in that widget... I'm totally lost, thanks in advance.

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