javascript当中抑制原始功能用法

7.抑制原始功能

例 7.1(PreventDefaulIEFF.html)

<head>
    <meta http-equiv="content-type" content="text/html; charset=utf-8"/>

<a id="kk" href="http://www.abc.com">淘宝</a>.
<script>
    function Clicks(event)
    {   
var event = event || window.event;

        if (window.navigator.userAgent.indexOf("MSIE") >= 1)   
        {
                    event.returnValue = false;
        }           
        else if (          window.navigator.userAgent.indexOf("Firefox") >= 1)            
        {            event.preventDefault();
        }
       
        alert("链接被click");
    }


    if (window.navigator.userAgent.indexOf("MSIE") >= 1)   
    {
        document.getElementById("kk").attachEvent("onclick" , Clicks);   
    }           
    else if (window.navigator.userAgent.indexOf("Firefox") >= 1)            
    {
        /*obj.addEventListener("click",function(){func("看到我了吧");},false);
  the third argument is: A Boolean flag value that indicates whether the event listener should
use bubbling (由里向外) or capture (由外向里) event propagation. 只要我们
知道第三个参数和事件冒泡有关就可以了。缺省值为假,即冒泡的意思。具体例子参考后面的事件冒泡例子。
     */
        document.getElementById("kk").addEventListener("click", Clicks, true);
    }
   
</script>

更多内容请见原文,文章转载自:https://blog.csdn.net/qq_43650923/article/details/102162036

posted @ 2021-11-26 20:22  malala  阅读(27)  评论(0)    收藏  举报