直接在绑定事件后添加return false 或
this.blur()；window.event.returnValue = false;
html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script src="meishu.js" type="text/javascript"></script>
</head>
<body>
<ul id="list">
<li>
<a href="img/04.png" title="hahhah">第一张</a>
</li>
</ul>
<img id="placeholder" src="img/06.png" alt="">
<p id="description">内容</p>
</body>
</html>
js
window.onload=function(){ function show(whichpic){ var source=whichpic.getAttribute("href"); var placeholder=document.getElementById("placeholder"); placeholder.setAttribute("src",source); var text=whichpic.getAttribute("title"); var description=document.getElementById("description"); description.firstChild.nodeValue=text; } var list=document.getElementById("list"); var links=list.getElementsByTagName("a"); for(var i=0;i<links.length;i++){ links[i].onclick=function(){ show(this); return false; // this.blur(); // window.event.returnValue = false; } } };