js 移除事件 

<html>
<head>
</head>
<body>
<input id="info"  type="button" value="click me!" />
<script type="text/javascript">
    //addeventlistener()和removeeventlistener()中handler函数必须相同，移除事件函数才有效。
    function myhandler(){
        console.log("i have been clicked!");
        document.getElementById('info').removeEventListener('click',myhandler,false);
    }
    var target=document.getElementById('info');
    target.addEventListener('click',myhandler,false);

</script>
</body>
</html>
posted @ 2016-10-06 16:56  liwei742314100  阅读(5656)  评论(0)  编辑  收藏  举报