jquery data attribute option code example

Example 1: jquery select by data attribute

$('div[data-key=value]');

Example 2: jquery data attribute

/* html */
<a data-number="123">link</a>

/* js */
$(this).attr("data-number") // returns string "123"

$(this).data("number") // returns number 123 (jQuery >= 1.4.3 only)