<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script>
    let a = 10;
    let b = 8;
    let c = a&b;
    //00000000 00000000 00000000 00001010;
    //00000000 00000000 00000000 00001000;
    // 按位与 都真取真
    //00000000 00000000 00000000 00001000;

</script>
</body>
</html>