Learning jQuery

Among all of the great fixes and additions to jQuery 1.6, I’m happy to say that jQuery.map() now supports objects! The previous map only supported arrays. With other libraries already offering object support for map, it was a nice addition.

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Half-baked tutorials and plugins have been stacking up for months in my virtual kitchen, waiting for me to fire up the oven, finish the cooking, and spread them out on the table. For some reason, though, I’ve become less and less sure about whether I’ve put all the right ingredients into the mix. It’s irritating, to be sure, but I’m tired of fretting about it. I’m going to consider this the first of what I hope to be many “taste tests” — experiments in various degrees of completion thrown against the wall to see what, if anything, sticks.

As some of you may know, the online jQuery documentation went through a major overhaul in January of this year, coinciding with the release of jQuery 1.4. Packt Publishing “open sourced” the jQuery 1.4 Reference Guide that Jonathan Chaffer and I had been writing, allowing us to put its entire contents (and more) on api.jquery.com. Some of you may also know that the raw XML content of the site is available as a single file, which has allowed other sites such as jqapi.com and idocs.brandonaaron.net to provide alternative views of that content. But what most of you probably do not know is that the jQuery API has been available for quite some time as a searchable API that returns the results in JSON format.

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These jQuery resources will set you on the path towards mastering jQuery.

Written Articles

• Getting Started with jQuery – this is the official jQuery getting started guide.
• jQuery for JavaScript Programmers – Simon Willison (creator of django) gives you an introduction to jQuery for people who already understand JavaScript.
• jQuery Crash Course – Nathan Smith gives a quick introduction to jQuery on Digital Web Magazine.
• Introduction to jQuery – Rick Strahl, well-known for his work developing with Microsoft technologies, gives his introduction to jQuery with part two covering using jQuery with ASP.NET.

E-Books

• jQuery Fundamentals – open-source e-book written by Rebecca Murphey in collaboration with other well-known members of the jQuery community.
• jQuery Enlightenment – Cody Lindley’s e-book covers advanced topics on jQuery with links to working code examples in jsbin.

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Since the fall of 2007, jQuery developers around the world have been making an annual pilgrimage to Boston, Massachusetts, to meet jQuery team members, JavaScript luminaries, and other jQuery developers at the official jQuery Conference. This spring, in response to growing demand, the jQuery Project is offering its first-ever official jQuery conference on the U.S west coast. The conference will take place April 24–25 in Mountain View, California, and will include top-notch presentations from the jQuery team, as well as other web development and performance experts. Additionally, the conference will be preceded by a one-day intensive jQuery training course in downtown San Francisco, led by appendTo a leading jQuery training and consulting company.

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In my Jan Aagaard asked how we might go about enhancing the script by adding a small delay before showing a tooltip. The answer lies with two JavaScript functions, setTimeout() and clearTimeout().

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Last time I showed how to use event delegation to create a simple tooltip for a huge number of elements without running into the problem of binding an event handler to all of those elements. In this tutorial, I’m going to refine that tooltip script a bit, avoiding some code repetition and fixing a bug that someone pointed out in a comment.

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