<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title> 排他思想 </title>
<style>
.box {
background-color: rgb(241, 11, 11);
}
</style>
</head>
<body>
<!-- 排他思想:先把大家恢复成默认,再让自己特殊 -->
<input type="button" value="点我啊">
<input type="button" value="点我啊">
<input type="button" value="点我啊">
<script>
// 找到所有按钮
var inList = document.getElementsByTagName('input');
// 遍历所有按钮加点击事件
for (var i = 0; i < inList.length; i++) {
inList[i].onclick = function () {
// 先把兄弟们都恢复成默认的
for (var j = 0; j < inList.length; j++) {
inList[j].className = "";
}
// 只让自己特殊
this.className = "box";
}
}
</script>
</body>
</html>
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