Web Developer Blog

This snippet applies a class when you hover over a table row and removes it when you move the mouse out. Useful when you have a table with many rows and want to improve readability. Define your stylesheet in head : <style type="text/css"> <!-- #mytable { border-collapse: collapse; width: 300px; } #mytable th, #mytable td { border: 1px solid #000; padding: 3px; } #mytable tr.highlight { background-color: #eee; } //--> </style> JavaScript (also in head ) <script type="text/javascript"> <!-- $( function() { $("#mytable tr").hover( function() { $(this).addClass("highlight"); }, function() { $(this).removeClass("highlight"); } ) } ) //--> </script> Your table (with id mytable ) in body <table id="mytable"> <tr> <th>Foo</th> <td>Lorem</td> <td>Ipsum</td> </tr> <tr> <th...

JavaScript Management with ASP.NET outlines how you can make managing JavaScript easier in ASP.NET. It uses an XML file to store the JavaScript code (so only one file needs to be edited) and a HTTP Handler / Utility class to request and obtain the JavaScript code. The downside to this approach is that it is less portable than simply having separate files - you would need to write code for extracting the JavaScript from the XML file if you use another server side language like PHP.

jQuery is capable of creating elements without using the DOM (i.e. document.createElement). You can take advantage of this to preload images, and it involves less code that most other solutions - if you ignore the fact that jQuery has overhead and assume you are using jQuery for tasks other than preloading. jQuery.preloadImages = function() { for(var i = 0; i<arguments.length; i++) { jQuery("<img>").attr("src", arguments[i]); } } You can then preload images before the page has fully loaded. Useful for when you implement rollover images (as there will not be the usual delay you normally get after mousing over a rollover image). $.preloadImages("foo.jpg", "bar.gif", "baz.png"); $( function() { alert("document ready"); } )

Update: forgot the return false (without it, the page would open in a new window and replace the current page). In (X)HTML Strict, anchor tags linking to other pages are not allowed to have the target attribute. Because of this, links can not be opened in a new window if the page validates. However, with jQuery and the addition of a class to anchors that open in new windows: <a href="http://jquery.com" class="external">jQuery</a> you can do this in just one line of code: $("a.external").click(function(){window.open(this.href);return false;}); . If you add any more links dynamically (i.e. through AJAX), you would have to run this again, but preferably not anonymously (i.e. inline function). function openWindow() { window.open(this.href); return false; } // shorthand for $(document).ready(function(){...}) $( function() { $("a.external").click(openWindow); } )

It is easy to solve the problem with quotes in Internet Explorer (the problem being that they are not contained in quotation marks) by using jQuery. All it takes is one line of code: $("q").prepend("&#8220;").append("&#8221;"); However, that means there are two quotes for browsers that do support the tag. A browser sniff is all that is needed (generally it is a bad idea to do that, but some circumstances require it). if($.browser.msie) { $("q").prepend("&#8220;").append("&#8221;"); } Demo page

Google now allows you to search for source code via Google Code Search that is freely available under several open source licenses (e.g. (L)GPL, BSD, MIT, Apache etc).

An update of my text clips for Programmers Notepad 2 (jQuery version 1.0.1). Download .