public/javascript/libs/select2.js
function (c) {
                var j = $([0]), i = -1, l = this.length;
                while (
                    ++i < l
                    && (j.context = j[0] = this[i])
                    && c.call(j[0], i, j) !== false //"this"=DOM, i=index, j=jQuery object
                );
                return this;
            }
function (c) {
                var j = $([0]), i = -1, l = this.length;
                while (
                    ++i < l
                    && (j.context = j[0] = this[i])
                    && c.call(j[0], i, j) !== false //"this"=DOM, i=index, j=jQuery object
                );
                return this;
            }
/*
4-10 times faster .each replacement
use it carefully, as it overrides jQuery context of element on each iteration