javascript當中Function用法

Function用法
馬克- to-win：馬克 java社區(qū)：防盜版實名手機尾號： 73203。
例 3.4.1

<head>
    <meta http-equiv="content-type" content="text/html; charset=utf-8"/>
</head>
<script>
    /*馬克-to-win：When the Global object is created, it always has at least the following properties:
       Object object
       Function object
       Array object
       String object
       Boolean object
       Number object
       Date object
       Math object
       Value properties
   */

    /*Function的好處是， 函數(shù)體可以是運行時的一個傳入的動態(tài)字符串，for the Function class, the last parameter is
    function body, while the parameters before the last one are input arguments., 'x' can be changed to "x" */
    var a='return x + y;';
    var f = new Function('x', 'y',a );// 等價于var f = function(x, y){return x + y;}
    document.write(f(1, 1));
</script>


輸出結果：

2