版权声明：https://blog.csdn.net/qq_35849955 https://blog.csdn.net/qq_35849955/article/details/82876793
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<input type="text" placeholder="请输入手机号:" id="phone">
<input type="button" value="提交" id="checkphone">
<script>
//手机号校验
document.getElementById("checkphone").onclick = function(){
var phone = document.getElementById("phone").value;
if(phone == null || phone =="" || !/^[1][3,4,5,7,8][0-9]{9}$/.test(phone)){
console.log("请检查手机号是否正确!")
}else{
console.log("输入正确")
}
}
</script>
</body>
</html>