javascript基础--数组 

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

<head>
    <meta charset="UTF-8">
    <title>数组</title>
    <script>
        var arr = [1, 2, 3, 4, 5];
        var arr1 = new Array(2, 3, 4, 5);
        arr1.length = 2; //数组长度可以赋值
        alert(arr1.length);
        alert(arr1);
    </script>
</head>

<body>

</body>

</html>

 

posted @ 2017-02-27 16:20  Mr_W_Blog  阅读(158)  评论(0)  编辑  收藏  举报