webDesign/practice.html at master · ruoyiqing/webDesign · GitHub

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<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>页面元素的水平居中</title>
    <script>
        window.onload=function(){
            var outer = document.getElementsByTagName("div")[0];
            var inner = document.getElementsByTagName("a")[0];
            outer.onclick = function(){
                alert('outer');
            }
            inner.onclick = function(event){
                alert('inner');
//            return false;
                event.preventDefault();
//            event.stopPropagation();
            }
        }
    </script>
    <script>
        if(window.ActiveXObject){
            var xmlHttpReq = window.ActiveXObject;
        }else if(window.XMLHttpRequest){
            var xmlhttpReq = new XMLHttpRequest();
        }
        xmlHttpReq.open("GET","")
    </script>
</head>
<body>
<div  >
    <a href="http://www.baidu.com"  >百度</a>
</div>
</body>
</html>