The 'quickEach' method will pass a non-unique jQuery instance to the callback meaning that there will be no need to instantiate a fresh jQuery instance on each iteration.

jQuery.fn.quickEach.js

jQuery.fn.quickEach = (function(){
    var jq = jQuery([1]);
    return function(c) {
        var i = -1, el, len = this.length;
        try {
            while (
                 ++i < len &&
                 (el = jq[0] = this[i]) &&
                 c.call(jq, i, el) !== false
            );
        } catch(e){
            delete jq[0];
            throw e;
        }
        delete jq[0];
        return this;
    };
}());