用上一章节js写的,没有效果,哪里错了。
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>挑战题</title>
</head>
<script type="text/javascript">
function onclick(){
var bb=document.getElementById("xx")
var cc=document.getElementsByTagName("li")
if(bb.innerHTML=="更多")
{ bb.innerHTML="简化"
cc[0].style.display="block"
cc[1].style.display="block"}
else(bb.innerHTML=="简化")
{ bb.innerHTML="更多"
cc[0].style.display="none"
cc[1].style.display="none"
}
}
</script>
<body>
<ul>
<li style="display:none">1</li>
<li style="display:none">2</li>
<li>3</li>
<li>4</li>
<li>5</li>
<li>6</li>
<li>7</li>
<a href="#" id="xx" onclick="onclick()">更多</a>
</ul>
</body>
</html>要怎样改,学着后面忘着前面,好无语啊