JS 基本语句

函数调用，分支，循环，语句示例。

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        function func1(param) {
            console.log("execute function 'func1'" + param);
        }
        let func2 = (param) => {
            console.log("Execute function func2" + param);
        }
        func1("hello");
        func2("world");
    </script>
    <script>
        let i = 0;
        let j = 1;
        if (i > j) {
            console.log("i>j");
        } else if (i === j) {
            console.log("i===j");
        } else {
            console.log("i<j");
        }
    </script>
    <script>
        let u = 0;
        switch (u) {
            case 0:
                console.log("0");
                break;
            case 1:
                console.log("1");
                break;
            default:
                console.log("-");
        }
    </script>
    <script>
        let v = 10;
        while (v > 0) {
            v--;
            console.log(v);
        }
        for (v = 0; v < 10; v++) {
            console.log(v);
        }
    </script>
</body>

</html>

运行结果：