<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>js鼠标移入移除显现与隐藏</title>
<script>
function m_over() {
//获取div里面名为"qq"的id鼠标移入时将其显现
var qq = document.getElementById('qq');
qq.style.display = "block";
qq.style.backgroundColor = "red";
}
//获取div里面名为"qq"的鼠标移除是将其隐藏
function m_out() {
var qq =document.getElementById('qq');
qq.style.display = "none";
}
</script>
</head>
<body>
<div onmouseover="m_over(this)" onmouseout="m_out(this)">显示部分
</div>
<div id="qq" style="display:none" >
<b>隐藏部分</b>
</div>
</body>
</html>
