哪错了？？求教
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>显示和隐藏</title>
<script>
var oP1=document.getElementById("p1");
function myhidden()
{
oP1.style.visibility="hidden";
};
function myvisible()
{
oP1.style.visibility="visible";
};
</script>
</head>
<body>
<p id="p1">This is a text!</p>
<input type="button" value="hidden" onclick="myhidden()"/>
<input type="button" value="visible" onclick="myvisible()" />
</body>
Ewall_浏览 1603回答 1
1回答
-
初恋茶香
var oP1=document.getElementById("p1");这里应该写在input后面，这样在加载页面时，运行到var oP1=document.getElementById("p1");才获取的到id为p1这个对象
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相关分类
JavaScript