Category Archives: JavaScript

JavaScript: Extending String to Have startsWith and endWith Functions

Posted on September 9, 2011 by Greg

Here’s two prototype functions you can add to your JavaScript to give you “startsWith” and “endsWith” functions: if (!String.prototype.startsWith) {     String.prototype.startsWith = function (str) {         return this.slice(0, str.length) == str;     }; } … Continue reading →

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jQuery: Global AJAX Error Handler

Posted on April 24, 2011 by Greg

Here’s a quick and dirty way to handle AJAX errors globally if you are using jQuery: $(document).ready(function () {     $.ajaxSetup({         error: function (x, e) {             if (x.status == … Continue reading →

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JavaScript: Quickly Trim the Last Character from a String

Posted on April 6, 2011 by Greg

When developing web applications, you undoubtedly have wanted to remove the last character from a string (such as a URL or application path)  in your JavaScript code. Here’s a quick way to get it done using the JavaScript function slice(): var applicationPath … Continue reading →

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JavaScript, UTF-8 Encoding: escape() vs. encodeURIComponent()

Posted on August 6, 2009 by Greg

ASP.Net web applications default to UTF-8 encoding.  Now, if you are using JavaScript to create or change URLs, you might run into an issue with the way the function “escape()” encodes characters if you are handling the decoding in your … Continue reading →

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Sys.WebForms.PageRequestManagerServerErrorException in FireFox with MSFT Ajax

Posted on December 11, 2008 by Greg

If you encounter this error while navigating away from an AJAX-enabled page with a non-IE browser, you can silence it with the following JavaScript: if (!document.all) //non-ie { window.onbeforeunload = function() { Sys.WebForms.PageRequestManager.getInstance().add_endRequest(ignoreOnEndRequest); } } function ignoreOnEndRequest(sender, e) { err … Continue reading →

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Using the PageRequestManager in ASP.Net AJAX (ATLAS)

Posted on September 27, 2007 by Greg

In your java script:: var postBackElem; Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(BeginRequestHandler); Sys.WebForms.PageRequestManager.getInstance().add_pageLoaded(PageLoadedHandler); function BeginRequestHandler(sender, args) { postBackElem = args.get_postBackElement(); } function PageLoadedHandler(sender, args) { var c = ‘panels created: ‘; var u = ‘panels updated: ‘; for(var i=0;i c += args.get_panelsCreated()[i].id + ‘, ‘; … Continue reading →

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FireFox caches JavaScript state

Posted on September 27, 2007 by Greg

Firefox uses in memory caching for JavaScript and can cause strange errors in your MSFT ASP.NET Ajax applications. Try adding this to your load event to prevent those errors: if (Request.Browser.MSDomVersion.Major == 0) // Non IE Browser?) { Response.Cache.SetNoStore(); // … Continue reading →

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Automatically close a window in FireFox

Posted on September 27, 2007 by Greg

You may run into an issue trying to close a created window in FireFox, this javascript usually does the trick on your close link: window.open(’java script:window.close();’,’_self’,’’);

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