js开关灯小应用
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2022-03-03 16:05:42
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js中判断的应用【开关灯】
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>开关灯</title>
<style type="text/css">
html, body {
margin: 0px;
padding: 0px;
width: 100%;
height: 100%;
cursor: pointer;
background-color: white; }
</style>
</head>
<body id="bodyEle">
<script type="text/javascript">
var oBody = document.getElementById("bodyEle");
oBody.onclick = function () {
var bg = this.style.backgroundColor;
switch (bg) {
case "white":
this.style.backgroundColor = "red";
break;
case "red":
this.style.backgroundColor = "black";
break;
default:
this.style.backgroundColor = "white";
}
}
</script>
</body>
</html>
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