<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
#div1 {
height: 100px;
width: 100px;
background-color: red;
}
#div2 {
height: 300px;
width: 300px;
background-color: gray;
display: none;
}
div {
margin: 10px;
float: left;
}
</style>
</head>
<body>
<div id="div1"></div>
<div id="div2"></div>
</body>
<script type="text/javascript">
//当鼠标移出div1的时候，提示框不立刻消失，延时消失
//当鼠标移入提示框时候，提示框始终保持显示状态，
//当鼠标移出提示框时候，提示框延时消失
var sDiv = document.getElementById("div1");
var bDiv = document.getElementById("div2");
var timer = null;
// sDiv.onmouseover=function(){
// clearTimeout(timer);
// bDiv.style.display="block";
// }
// sDiv.onmouseout=function(){
// timer=setTimeout(function(){
// bDiv.style.display="none";
// },3000);
//
//
// }
// bDiv.onmouseover=function(){
// clearTimeout(timer);
// }
// bDiv.onmouseout=function(){
// timer=setTimeout(function(){
// bDiv.style.display="none";
// },3000)
// }
//函数合并,上面是未合并之前的详细代码
div1.onmouseover = div2.onmouseover = function() {
clearTimeout(timer);
div2.style.display = "block";
}
div1.onmouseout = div2.onmouseout = function() {
timer = setTimeout(function() {
div2.style.display = "none";
}, 3000)
}
</script>
</html>