【代码笔记】Web-JavaScript-JavaScript语法

一，效果图。

【代码笔记】Web-JavaScript-JavaScript语法-LMLPHP

二，代码。

<!DOCTYPE html>

<html>

<head>

    <meta charset="utf-8">

    <title>javascript 语法</title>

</head>

<body>

    <!--JavaScript 字面量-->

    <p id="demo"></p>

    <script>

    document.getElementById("demo").innerHTML = 123e5;

    document.getElementById("demo").innerHTML = "John doe";

    document.getElementById("demo").innerHTML = 5 * 10;

    var length;

    length = 6;

    document.getElementById("demo").innerHTML = length;

    document.getElementById("demo").innerHTML = (5 + 6) * 10;

    </script>

</body>

</html>