823
技術社區[雲棲]
Js控製css——模仿視頻網站關燈開燈
<head>
<title></title>
<style type="text/css">
.day
{
background-color:White;
}
.night
{
background-color:Black;
}
</style>
<script type="text/javascript">
function SwitchLight() {
var btn = document.getElementByIdx_x("btnChange");
if (document.body.className == "night") {
document.body.className = "day";
btn.value = "關燈";
}
else if (document.body.className == "day") {
document.body.className = "night";
btn.value = "開燈";
}
}
</script>
</head>
<body >
<input type="button" value="開燈" />
</body>
最後更新：2017-04-02 22:16:01