function removeClass(name){        var $ele = this.ele;        if(!$ele){            console.log('>> 找不到该元素: id = ',ele);            return !1;        }        var rex = new RegExp('\\s'+name+'|'+name+'\\s');        $ele.className = $ele.className.replace(rex,'');        return this;    }    function addClass(name){        var $ele = this.ele;        if(!$ele){            console.log('>> 找不到该元素: id = ',ele);            return !1;        }        if(this.hasClass(name)){            return !1;        }else{            $ele.className = $ele.className + ' ' + name;        }        return this;    }    function hasClass(name){        var $ele = this.ele;        if(!$ele){            console.log('>> 找不到该元素: id = ',ele);            return !1;        }        var rex = new RegExp('\\s'+name+'|'+name+'\\s');        return $ele.className.search(rex) > -1;    }    function getId(id){        return getEle(document.getElementById(id));    }    function getEle(ele){        return {            ele: ele,            removeClass: removeClass,            addClass: addClass,            hasClass: hasClass        }        return eleObj;    }

写这个的目的有两个。