JQuery函数

最新推荐文章于 2024-01-04 10:48:30 发布

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最新推荐文章于 2024-01-04 10:48:30 发布

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原文链接：http://www.cnblogs.com/zwjblogs/archive/2012/02/22/2363527.html

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
    <script src="Scripts/jquery-1.4.1.js" type="text/javascript"></script>
    <script type="text/javascript">
var arr = [1, 2, 3];
//$.map(arr,fn)遍历数组元素每个元素乘以2赋值给新的数组
        var arr2=$.map(arr,function(item){return item*2});
        alert(arr2);
//$.each(arr,fn)遍历字典风格的数组
        var dict = {"tom":20,"jerry":30,"jim":40};
        $.each(dict, function (key, value) { alert(key + "的年龄是：" + value); });
//无参数时得到的是value;
        $.each(dict, function () { alert(this) });
    </script>
</head>
<body>
</body>
</html>