js怎样让鼠标放到弹出的二级菜单上时不消失呢?
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>导航</title>
<style type="text/css">
* {
margin: 0;
padding: 0
}
.one,.two,.three,li {
list-style-type: none;
display: block;
background: blue;
text-align: center;
float: left;
height: 30px;
width: 80px;
}
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>导航</title>
<style type="text/css">
* {
margin: 0;
padding: 0
}
.one,.two,.three,li {
list-style-type: none;
display: block;
background: blue;
text-align: center;
float: left;
height: 30px;
width: 80px;
}
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