JavaScript DOM操作案例判断密码长度
<!DOCTYPE html>
<html >
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<input type="password" value="" />
<script src="common.js"></script>
<script>
//获取文本框
my$("pw").onblur = function () {
//判断密码长度
if (this.value.length >= 6 && this.value.length <= 10) {
this.style.backgroundColor = "red";
} else {
this.style.backgroundColor = "green";
}
};
</script>
</body>
</html>