小编Mr *_*Ken的帖子

;"use strict";
(function(){
    function libJS(){};

    libJS.prototype = {
        loopElement : function(element, options, callback){
            var libObj = this;
            var goesCallback = function(element, options, callback){
                if (!!callback && libObj.isFunction(callback)) callback(element, options);
            };

            if (libObj.isElement(element)) goesCallback(element, options, callback);
            else if (libObj.isString(element) && /^(\.|\#)[\w\d\-_]+$/g.test(element)){
                if (/^\./g.test(element)){
                    element = document.getElementsByClassName(element.replace('.', ''));
                    var length = element.length || 0, i;
                    for(i = 0; i < length; i++) goesCallback(element[i], options, callback);
                }else{
                    element = document.getElementById(element.replace('#', ''));
                    if (!!element) goesCallback(element, options, callback);
                }
            }
        },

        isElement …