Month: August 2009

Posted on

An Up/Down control in jQuery

Make machines do your bidding with JavaScript. Check out The Little Book of JavaScript!

Recently, I needed to write an up/down selector – you know the sort, it’s where you select a number by clicking on an up or down arrow. Since they can be useful for other things besides numbers, I gave it the plugin treatment.

Most of the information about the plugin can be found in its documentation page.

Also available is a slightly beefier styled and animated demo of the plugin.

If you’re just interested in the plugin itself, you can find it here.

Posted on

Attaching data to elements in jQuery

Bring on the scripting! Check out The Little Book of JavaScript!

This morning, I found out about a very useful jQuery function going by the unassuming name of data. This fantastic little beast creates a data store for an element, and lets you store just about anything in there.

One of the ways in which this can be used is to attach functions to an element, and using them when required. To demonstrate the usefulness of this feature, I wrote two versions of a simple validation system. In one, we use the data function to assign one or more validators to an input box [Example 1: using $(x).data()]. In the other, we iterate over the inputs and check them against validators as needed [Example 2: not using $(x).data()]. Continue reading “Attaching data to elements in jQuery”