DOM Traversing

Quick Tip – Optimizing DOM Traversal

The topic of optimization has come up a number of times in the jQuery mailing list. jQuery's DOM traversal is powerful and easy, but it can sometimes be slow as well. As with any JavaScript library or framework, the helper methods will be slower than the plain old JavaScript (p.o.j) methods. Nevertheless, if we keep […]
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Selecting Elements by Properties and DOM Expandos

Sometimes it is very convenient to store information on an element by using custom properties (DOM Expandos). For example, I use DOM Expandos in my Mouse Wheel plugin to store an array of handler methods (_mwHandlers) along with a method (_mwHandler) to call all those handlers when the mouse wheel is used. Storing these methods […]
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Improved Animated Scrolling Script for Same-Page Links

After posting the last entry on animated scrolling with jQuery 1.2, I realized that I had left out an important piece of code. Actually, I didn't discover it until someone notified me that another page on the site was broken. Can you spot the problem(s)? [Note: the problem is not in line 3. The syntax […]
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Questions and Answers from the List

I've been feeling guilty lately about my lack of posts to this blog. But when I looked at my profile for the jQuery Google Group and discovered that for the past six months I've posted an average of 100+ times each month, well, I decided to give myself a break. Since I'm sure some people […]
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Revealing Details with jQuery

A week or so ago, someone posted a comment on one of my previous articles, asking if I could help her split up the textual content of an element, showing the first part and replacing the second with a link that, when clicked, would reveal the text. This behavior would appear in an FAQ using […]
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Quick Tip: Dynamically add an icon for external links

A common feature I've seen on “web 2.0” sites and wikis is the "external link" icon: . While I'm not crazy about the idea of sticking these little images all over the HTML, they're a great candidate for using progressive enhancement. In our case, we can use jQuery to add the images pretty easily.
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