Little jQuery plugin to wrap every X items.

jquery.wrapeach.js

/**
 * Wraps every num elements with el.
 * 
 * Usage: $('.foo').wrapEach('<div></div>', 5);
 * Wraps every 5 .foo's with a <div>, defaults to 2.
 */
$.fn.wrapEach = function(el, num) {
  num = num || 2;
  for (var i = 0; i < this.length; i += num) {
    this.slice(i, i + num).wrapAll(el);
  }
  return this;
};