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• Large number array compression

  - by gatapia

  Hi All, I've got a javascript application that sends a large amount of numerical data down the wire. This data is then stored in a database. I am having size issues (too much bandwidth, database getting too big). I am now ready to sacrifice some performance for compression. I was thinking of implementing a base 62 number.toString(62) and parseInt(compressed, 62). This would certainly reduce the size of the data but before I go ahead and do this I thought I would put it to the folks here as I know there must be some outside the box solution I have not considered. The basic specs are: - Compress large number arrays into strings for JSONP transfer (So I think UTF is out) - Be relatively fast, look I'm not expecting same performance as I have now but I also don't want gzip compression either. Any ideas would be greatly appreciated. Thanks Guido Tapia

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• Call External Javascript function using Codeigniter

  - by Ajith

  Hi, I need to call a javascript function from my controller in codeigniter.It is possible in codeigniter ? Problem Details My javascript file contains ` function debugOutput(msg) { alert (msg); } ` and also I need to call it from my controller. I done it as follows. <?php function check() { header('Content-type: application/x-javascript'); // body here } ?> function execute() { debugOutput("&lt;?php echo 'test'; ?&gt;"); } execute(); But it is not working.Please help me to solve it.

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• Does setting an onload event for a <script> tag work consistently in modern browsers?

  - by Matchu

  I observe that placing the following in an external script file has the desired effect in my copies of Firefox and Google Chrome: var s = document.createElement('script'); s.setAttribute('type', 'text/javascript'); s.setAttribute('src', 'http://www.example.com/external_script.js'); s.onload = function () { doSomethingNowThatExternalScriptHasLoaded } document.getElementsByTagName('body')[0].appendChild(s); It adds a an external script tag to them DOM, and attaches a function to the tag for when the script has loaded. I'm having trouble testing in Internet Explorer right now, but I'm not sure if it's related to that addition in particular, or something else. Does this method work in the more modern versions of other browsers, including IE7/8? If not, how else could I go about this?

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• Why mysql is not storing data after "#" character?

  - by Nitz

  Hey Friends, I have made one form in which there is rich text editor. and i m trying to store the data to database. now i have mainly two problem.. 1) As soon as the string which contents "#"(basically when i try to change the color of the font)     character, then it does not store characters after "#". and it also not store "#" character also. 2) although i had tried....in javascript html.replace("\"","'"); but it does not replace the double quotes to single quotes.

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• Execute PHP without leaving page

  - by Dylan Taylor

  Okay. I have a form - textarea (named "su") and submit button. When the form is submitted, I need to run a PHP script without refreshing/leaving page "echo" or somehow print a return on the screen I'm pretty sure this works via some kind of ajax request thing. but I have no idea what I'm talking about. I'm not big on ajax or javascript, but this is a function i use very frequently and I'd like to learn how it works so I can implement it when i need to now and in the future. Like i said I'm uneducated with ajax or java. a quick example would be wonderful. thanks for taking the time to read!

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• Hover text at mouse created from firefox toolbar add-on

  - by c-square

  Hi all, I'm creating a firefox add-on, and I have a situation where if someone clicks on a specific item in my toolbarbutton menupopup, I want to display some text to appear beside the mouse for a couple seconds. I don't mean mouseover text, because when they click on the item, the I close the menupopup. I mean something like what's shown at this site: http://www.kingsquare.nl/cursormessage The normal way of doing this would be with javascript and a div that would have the text I want to show. Unfortunately, I've discovered that the toolbarbutton can't have an effect on the main window, which is where I'd need to place the div to show. I've tried getting JQuery to work and haven't been successful either. Any help would be greatly appreciated. Thanks!

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• Textarea for my web application

  - by Parhs

  Hello ... I am developing an application web based which would let the users extend a part of an applcation using javascript via java.scripting http://java.sun.com/javase/6/docs/technotes/guides/scripting/programmer_guide/index.html The problem is that the user should write only some coditions and i want if possible to colour some special words and to check while typing if the variable that the user is typing exists.. Like a auto suggest thing... I searched at the web but didnt find many stuff. For WYSIWYG editors i couldnt determine if you can programaticcaly apply stuff and set/get caret position. Also i show that autosuggest is nearly impossible. It should be locatted outside of the textbox area.

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• getSelection & surroundContents across multiple tags

  - by lethalbody

  Hi, I've got a script that changes the background colour of text that has been selected. However i'm encountering an issue when the text is selected across multiple elements/tags. The code that i've got is: var text = window.getSelection().getRangeAt(0); var colour = document.createElement("hlight"); colour.style.backgroundColor = "Yellow"; text.surroundContents(colour); And the error being output is: Error: The boundary-points of a range does not meet specific requirements. = NS_ERROR_DOM_RANGE_BAD_BOUNDARYPOINTS_ERR Line: 7 I believe this is to do with the getRange() function though i'm not too sure how to proceed since I am a beginner at javascript. Is there any other way I can replicate what I am trying to achieve? Many thanks.

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• What web browser engine, version, and capabilities are used to display web pages inside Visual Studio 2010?

  - by Phrogz

  My company is developing a plugin/add-on for Visual Studio 2010. When the user asks to display the help for our product, we plan on opening an HTML page (or suite of pages) within Visual Studio. I'm helping to design and implement the help system. What web engine/version is used within Visual Studio 2010? According to Wikipedia it is not Trident(!). Am I allowed to load remote JavaScript content (via a <script> element)? Am I allowed to use XHR to load remote content? Will my page be trusted and have access to the FileSystemObject? I would appreciate any resources you can give me on programming specifically to the 'web' capabilities of VisualStudio2010-as-a-browser.

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• AJAX vs AHAH Is there a performance advantage?

  - by LanguaFlash

  My concern is performance, is there a reason to to send the client XML instead of valid HTML? Like most things, I am sure it is application dependent. My specific situation is where there is substantial content being inserted into the web page that has been pulled from a database. What are the advantages of either approach? Is the size of the content even a concern? Or, in the case of using XML, will the time for the Javascript to process the XML into HTML counterbalance the extra time that would have been required to send HTML to start with? Thanks, Jeff

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• ExternalInterface.addCallback doesn't work on firefox??

  - by dome

  i'm trying to call a method inside a flash movie from js, every time the mouse leaves the "div". It works on Internet Explorer, but not in firefox. any ideas? here is the html script: <script type="text/javascript"> window.onload = function(e){ init(); } function init(){ document.getElementById('div').onmouseout = function(e) { method(); } } function method(){ flashid.anothermethod(); } </script> and the flash script: import flash.external.ExternalInterface; function outdiv(){ //do something; } ExternalInterface.addCallback('anothermethod', outdiv); Any ideas what's wrong?

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• window.open("c:\test.txt") from Silverlight

  - by queen3

  I'm trying to open local file from Silverlight. I try Window.Navigate("c:\test.pdf", "_blank") and invoking JavaScript like this: window.open("c:\test.pdf", "_blank") Both give "Access is denied". However it works in plain HTML when I do <input type="button" value="test" onclick="window.open('c:\test.pdf', '_blank')" /> Is it Silverlight security restriction? Can I open a local file in a browser from Silverlight application? The reason behind this is that users store local paths and want to open those files from the app.

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• How to access a flash object embedded via swfobject's embedSWF?

  - by Andree

  Hi there, I have to call an ActionScript method via Javascript, but I have a problem accessing the flash object itself. I embed the flash file via the help of swfobject. Previously, when I use the static publishing approach, I could easily get the flash object by calling these methods: swfobject.registerObject("flash_object", "9", "expressInstall.swf"); var flash_object = swfobject.getObjectById("flash_object"); For some technical reasons, now I have to use the dynamic publishing approach (using swfobject.embedSWF). But, as mentioned in the documentation, the method getObjectById can only be used if you use static publishing approach. Now, how can I access the flash object? Cheers, Andree

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• How can i open Thickbox from a form and feed it with data ?

  - by Mark Dekker

  I have a simple search php script, within that script there is some html and javascript to make a search input field and a button. What i am trying to do is when someone enters a search, and presses submit, thickbox opens, and the results will be displayed in the thickbox. What i have so far is the search field and button, when i press submit, it briefly shows the thickbox, and than is overloaded by the result page, but than with no search results. Here is the code: <form method="get"> <input type="text" name="merk" size=10 style="font-weight: bold; background-color:#D5DF23;">&nbsp;&nbsp; <input type="image" name="merk" class="thickbox" onclick="document.location.href='searcher.php?keepThis=true&TB_iframe=true&height=520&width=800';" src="zoek1.jpg" width="110" alt="Zoek" onMouseOver="this.src='zoek2.jpg'" onMouseOut="this.src='zoek1.jpg'"> </form></input>

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• How to use json object notation to retrieve dbpedia json data

  - by Margi

  In my php code, I am retrieving json data as below. <?php $url = "http://dbpedia.org/data/Los_Angeles.json"; $data = file_get_contents($url); echo $data; ?> The javascript code consumes this json data returned from php and gets the json object as below. var doc = eval('(' + request.responseText + ')'); How to retrieve the following json data using dot notations. The keys contain URLs. "http://dbpedia.org/ontology/populationTotal" : [ { "type" : "literal", "value" : 3792621 , "datatype" : "http://www.w3.org/2001/XMLSchema#integer" } ] , "http://dbpedia.org/ontology/PopulatedPlace/areaTotal" : [ { "type" : "literal", "value" : "1301.9688931491348" , "datatype" : "http://dbpedia.org/datatype/squareKilometre" }

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• innerHTML removes attribute quotes in Internet Explorer

  - by Augustus

  When you get the innerHTML of a DOM node in IE, if there are no spaces in an attribute value, IE will remove the quotes around it, as demonstrated below: <html> <head> <title></title> </head> <body> <div id="div1"><div id="div2"></div></div> <script type="text/javascript"> alert(document.getElementById("div1").innerHTML); </script> </body> </html> In IE, the alert will read: <DIV id=div2></DIV> This is a problem, because I am passing this on to a processor that requires valid XHTML, and all attribute values must be quoted. Does anyone know of an easy way to work around this behavior in IE?

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• Google Translate Widget fails in Firefox

  - by Jonathan

  I am attempting to implement the Google Translate Widget where you include a piece of javascript code into your page and it gives you a language dropdown. This was very straightforward however, it does not work in Firefox. It works in IE, Safari, Chrome. Has anybody experience this problem and is there any workaround? With some research, it seems that people said that it used flash. However, I don't have any flashblock installed or anything like that. The widget: Widget Info If you load up the Google Translate blog, their translate box in the top right doesn't work: Google Translate Blog

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• Simple example of popup authentication with Facebook Graph API

  - by ensnare

  Trying to get Facebook to authenticate my users via a javascript popup. Right now, I have: <input type="button" value="Connect with Facebook" onclick="window.open('https://graph.facebook.com/oauth/authorize?client_id=XXXXXXXXXXX&redirect_uri=http://example.com/step2&display=popup')" /> But when the user logs in via Facebook, the popup just displays the Facebook.com homepage. I'd like for the popup to authenticate the user and go away so that I can start retrieving user data from the graph api. Is there a better / easier way to do this? Simple examples are appreciated. Thank you.

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• How to combine mvc2 client side validation with other client side validation?

  - by Andrey

  I have a page using mvc2 with client side validation. The client side validation is provided by Microsoft Ajax mvc validation script. This does very well to validate all fields that are related to the model. I also have fields that are never sent to the server such as the confirm password value, and the accept agreement. For these fields i need pure client side validation. I created the javascript to do this, but am now having a hard time integrating the two validatiosn together. I was hoping that i could do something like add another error to an array, or set the page manually to not valid to make sure that the user cannot submit. Basically follow the same approach that i would with normal asp.net validation. I can't find anything like that. In all examples validators are discussed that are connected to parts of the model. What is my best approach here?

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• Good code highlighting, syntax analysis and code assist editor on js.erb and css.erb files

  - by Pickachu

  I want to know if there is a good compatible api that supports erb and javascript highlighting. I've already tried Eclipse with Aptana RadRails. Perhaps I'm configuring something wrong, but it guesses that I'm using html.erb on both css.erb and js.erb files. I've tried too the Emacs with js2-mode, nXhtml and Rinari modes. Again, it works fine for html.erb, but it detects the css.erb and js.erb as html.erb files. Maybe it's possible to configure it to accept that files and be compatible.

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• How to add Points and Markers Dynamically to Google Maps from JSF

  - by Omer

  I have an app in J2EE with a couple of projects. Got my .war project that communicates with a EJB business project which has access to some Data. I have an entity which has some information about places, and I want to show a collection of those places in a single map on a JSF page. I have a Collection of coordinates to be assigned as points on a polyline in Google maps, and I've got this collection as a return of a java function of the jsf page, but I dont know how to get this collection from jsf and then how to make the map work I'll be very greatful if someone can give me some jsf code as an example. (and if someone knows how to set the autoReshape attribute for maps in jsf using javascript, please tell me the secret!!!!) Thanks a lot.

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• ASP.NET Development Server - Empty webResource.axd after conversion from 2.0 to 3.5

  - by David Casey

  I have moved a project from asp.net 2.0 to 3.5. The original project was using the atlas ajax extensions so I have modified the code to use the built in ajax features in 3.5. When running the project within the dev environemnt (VS2008 on Vista Business SP1) and using the asp.net dev server I receive javascript errors such as WebForm_PostBackOptions which point to a missing handler/module. If I deploy the project and run it stand alone within IIS or if I use Fiddler2 while running in VS2008 I do not see the errors and fiddler shows that the axd files are being downloaded correctly. Also deploying to a 2003 server does not show any issues. I could just carry on and forget this as it works when deployed but I would like to understand what is happening. Has anyone got an ideas as to what is going on here and how to get the same results accross all environments?

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• Determining whether values can potentially match a regular expression, given more input

  - by Andreas Grech

  I am currently writing an application in JavaScript where I'm matching input to regular expressions, but I also need to find a way how to match strings to parts of the regular expressions. For example: var invalid = "x", potentially = "g", valid = "ggg", gReg = /^ggg$/; gReg.test(invalid); //returns false (correct) gReg.test(valid); //returns true (correct) Now I need to find a way to somehow determine that the value of the potentially variable doesn't exactly match the /^ggg$/ expression, BUT with more input, it potentially can! So for example in this case, the potentially variable is g, but if two more g's are appended to it, it will match the regular expression /^ggg$/ But in the case of invalid, it can never match the /^ggg$/ expression, no matter how many characters you append to it. So how can I determine if a string has or doesn't have potential to match a particular regular expression?

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• Current URL with PHP

  - by Christopher

  I have a link shortener system (Yourls) set up so you can go to the short url with ?url=[xyz] (where [xyz] is the url you wan to shorten) added to the end will shorten the URL. I want to add a link to a separate page (on my MediaWiki wiki) that shortens the permalink of the page that it is on. I need to add the button to my template in a way that will add the URL of the current page to the link. MediaWiki is a PHP platform, so that is preferred (but JavaScript is fine too). How can I do this? (I apologize if this is confusing)

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• Problem with HTML Parser in IE

  - by Luis Armando

  I am trying to create a dialog box that will appear only if the browser selected is IE (any version) however I get this error: Message: HTML Parsing Error: Unable to modify the parent container element before the child element is closed (KB927917) That's all in "Line/Char/Code" 0 so I do not know where is the error. The code I'm using is this: <script type="text/javascript"> <!-- if(BrowserDetect.browser.contains("Explorer")) { var Nachricht = 'Hemos detectado que está utilizando ' + BrowserDetect.browser + ' ' + BrowserDetect.version + '. Puede que algunas funciones no estén habilitadas. <p></p> Si desea experimentar todo el potencial del portal, por favor intente desde otro navegador (browser). <p></p>Gracias showDialog('¡Aviso Importante!',Nachricht,'warning',10); } </script> I've noticed if I remove the "BrowserDetect.browser" and .version it removes the error, but I need those to check =/...any ideas will be appreciated =).

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