鼠标点击页面中的任意标签，alert该标签名称

方法一：利用冒泡解决该问题

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script type="text/javascript">
      document.onclick=function(e){
        var e = (e || event);
        var o = e['target'] || e['srcElement'];
        alert(o.tagName.toLowerCase());
      }
    </script>
</head>
<body>
    <span id="time">60</span>
    <p>123</p>
    <h1>我们</h1>
    <div>大家</div>
</body>
</html>

方法二、进行遍历

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>遍历所有标签进行添加click事件</title>
</head>
<body>
    <div class="alert">div</div>
    <a href="javascript:;" class='alert'>a</a>
    <b class="hel">b</b>
    <script>
            function getTagName(){
    return document.getElementsByTagName("*");
        }

    function stopPropagation(e) {  
              e = e || window.event;  
            if(e.stopPropagation) { //W3C阻止冒泡方法  
              e.stopPropagation();  
            } else {  
           e.cancelBubble = true; //IE阻止冒泡方法  
          }  
    }
        window.onload=function(){
            var tagObj=getTagName();
            console.log("nihaofdfdfdfdfdfdf");
            for(var i=0,max=tagObj.length;i<max;i++){
                tagObj[i].onclick=function(e){

                    stopPropagation(e);
                    alert(this.tagName);
                }
            }
        }
    </script>
</body>
</html>

 

posted @ 2018-08-21 20:33  小新没蜡笔哦  阅读(1195)  评论(0)    收藏  举报