代码改变世界

9.时间函数01

2017-04-13 16:18  笨笨03  阅读(163)  评论(0)  编辑  收藏  举报 
<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title>T54-时间函数</title>
</head>
<body>
<input type="text " id="well" />
<button onclick="stopCount()">点击停止</button>


</body>

<script type="text/javascript">
    var num= 0,i;
    function timedCount(){
        document.getElementById("well").value=num;
        num+=1;
        i=setTimeout(timedCount,1000);
    }
        setTimeout(timedCount,1000);
    function stopCount(){
        clearTimeout(i);
    }



</script>

</html>