jQuery

Aside from a few esoteric tricks involving stuff like the resize handle on textareas, draggable elements is JavaScript territory on the web. E.g. click on element, hold down mouse button, drag mouse cursor, element drags with the mouse, release mouse button to release element. Or the touch equivalents. Fortunately this is well-tread territory. Time tested tools like jQuery UI offer Draggable (and other similar methods) to make this easy.

But recently in trying to achieve a certain effect (see title of this article) I couldn't quite get jQuery UI to do it how I wanted. But I got it done and here's how.

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It's really easy to add an event listener in jQuery. It's equally easy to remove an event listener. You might want to remove a listener because you don't care to perform any actions on that event anymore, to reduce memory usage, or both. But let's say you've attached several listeners to the same event. How do you remove just one of them? Namespacing can help.

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I couldn't be more pleased to announce that I finished a brand new course for The Lodge. It's called Learning jQuery From Scratch and I bet you can guess what it's about.

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What if someone signs up for your web app and they type in their email address as susan_smith@gmaoil.com? They don't notice, they never get their confirmation email, they never can log in again, the "forgot password" feature doesn't work, and there is a lot of frustration and finger pointing.

Can't we help with that?

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A question came up in a semi-recent ShopTalk episode about the use of jQuery in tutorials.

Lately I've begun to realize how muddled the line between jQuery and JavaScript has become when learning about the language. It's hard to find a solid tutorial that doesn't include jQuery instead of JavaScript. What's your opinion on the overuse of the library?

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It's a common need in web apps: you click something and the text of the thing you just clicked changes. Perhaps something simple like a "Show" button that swaps to "Hide", or "Expand Description" to "Collapse Description." This is a fairly simple thing to do, but there are various considerations to make. Let's cover a bunch of ways.

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Brad Vincent introduces a new jQuery plugin for helping with responsive data tables with his friend Steve.

In which Darren Jamieson of Engage Web explains how he visually emulates the weather on the top header of engageweb.co.uk using all sorts of fun technology.

A couple of techniques and food for thought around the idea of adding a favicon next to links on websites.