Store dom selections in a var for reuse

reuse-dom-selections.js

/**
 * You've probably done this before. I know I have.
 */
var text = $( '#myid .select a > element' ).text();
newtext = doSomeStuff( text );
$( '#myid .select a > element' ).text( newtext );
$( '#myid .select a > element' ).addClass( 'someClass' );
$( '#myid .select a > element' ).fadeIn();

/**
 * Now you've made jQuery go searching for the same
 * DOM element 4 times. What a dick.
 *
 * Store that reference so you can reuse it. Here
 * we're only asking jQuery to go find it once.
 */
var dom_element = $( '#myid .select a > element' );
var text = dom_element.text();
newtext = doSomeStuff( text );
dom_element.text( newtext );
dom_element.addClass( 'someClass' );
dom_element.fadeIn();