JavaScript实现延时提示框

<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
<style type="text/css">
    #div1 {
        width: 50px;
        height: 50px;
        background: red;
        margin: 10px;
        display: block;
    }
    #div2 {
        width: 300px;
        height: 300px;
        background: #868282;
        display: none;
    }
</style>
</head>
<body>
<div id="div1"></div>
<div id="div2"></div>
<script>
    var odiv1=document.getElementById('div1');
    var odiv2=document.getElementById('div2');
    var timer=null;
    odiv1.onmouseover=odiv2.onmouseover=function()
    {
        clearTimeout(timer);  /*当鼠标移到div2时关闭定时器*/
        odiv2.style.display='block';
    }
    odiv1.onmouseout=odiv2.onmouseout=function()
    {
        timer=setTimeout(
        function()
        {
            odiv2.style.display='none';
        },1000);   /*1秒后再消失*/
    }
</script>
</body>
</html>

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原文地址：https://www.cnblogs.com/xinlvtian/p/7929405.html