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Question

我想把两个方法封装起来, 以后就可以多次使用了, 时间只能显示一次就报错 ? 还有fn也传不了? 是因为setTimeout的问题 ?代码:      <h1 id="box2"></h1>     <input type="button" id="button" value="倒计时">          <script type="text/javascript">         window.onload = function () {             // 倒时时             var button = document.getElementById('button');                 button.disabled = true;             showTime().countDown('box2',function () {                 button.disabled = false;             });             button.onclick = function () {                 console.log(this);             }         }         function showTime() {             return {                 countDown:function (id,fn) {                     var nowTime = new Date();                     var endTime = new Date('2016/10/17,01:02:50');                     var resultTime = parseInt((endTime.getTime() - nowTime.getTime()) / 1000); // 毫秒 时间差                     var d = parseInt(resultTime / (24*60*60)); //天                     var h = showTime().checkTime(parseInt(resultTime / (60*60) % 24));//时                     var m = showTime().checkTime(parseInt(resultTime / 60 % 60)); //分                     var s = showTime().checkTime(parseInt(resultTime % 60));//秒                     // document.getElementById('box2').innerHTML = d+'天'+h+'时'+m+'分'+s+'秒';                     document.getElementById(id).innerHTML = d+'天'+h+'时'+m+'分'+s+'秒';                     if (resultTime <= 0) {                         fn();                         document.getElementById(id).innerHTML = 'End';                     }                     setTimeout(showTime().countDown,1000);                 },                 checkTime:function (num) {                     if (num < 10) {                         num = '0'+num;                     }                     return num;                 }             }         }     </script>

Answer 1

 setTimeout(function(){
     showTime().countDown(id,fn);
 },1000);

把33行改成这样就行了