JS延时器

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" type="text/css" href="系统CSS初始化.css">
    <style>
        #div1{
            width: 50px;
            height: 50px;
            background: rebeccapurple;
            float: left;
            margin: 20px;
        }
        #div2{
            width: 200px;
            height: 200px;
            background: #555555;
            float: left;
            margin: 20px;
            display: none;
        }
    </style>
    <script>
        window.onload=function () {
            var oDiv1=document.getElementById("div1");
            var oDiv2=document.getElementById("div2");
            var timer=null;
            oDiv1.onmousemove=function () {
                clearTimeout(timer);
                oDiv2.style.display="block";
            }
            oDiv1.onmouseleave=function () {
               timer= setTimeout(function ()
                {
                    oDiv2.style.display="none";
                },500)

            }
            oDiv2.onmousemove=function () {
                clearTimeout(timer);
            }
            oDiv2.onmouseleave=function () {
                timer=setTimeout(function () {
                    oDiv2.style.display="none";
                },500)

            }
        }
    </script>
</head>
<body>
<div id="div1";></div>
<div id="div2"></div>
</body>
</html>

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转载自blog.csdn.net/yangyalun/article/details/79865849
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