<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script>
    /*
    比较运算符
    *
    * ==   只比较值等不等,不会管数据类型
    * ===  值与数据类型都得一样
    *
    * !=
    * !==
    *
    * */

    let a = 10;
    let b = '10';
    console.log(a == b); //true
    console.log(a === b); //false
    console.log(a !== b); //true
</script>
</body>
</html>