Json 的map key

来源：互联网发布：linux telnet 测试端口编辑：程序博客网时间：2024/04/29 18:35

{"provinces":{"11":"北京市 ","12":"天津市","13":"河北省 ","14":"山西省","15":"内蒙古自治区","21":"辽宁省","22":"吉林省","23":"黑龙江省 ","31":"上海市","32":"江苏省 ","33":"浙江省 ","34":"安徽省 ","35":"福建省 ","36":"江西省","37":"山东省","41":"河南省","42":"湖北省 ","43":"湖南省","44":"广东省","45":"广西壮族自治区","46":"海南省","50":"重庆市","51":"四川省","52":"贵州省","53":"云南省","54":"西藏自治区","61":"陕西省","62":"甘肃省","63":"青海省","64":"宁夏回族自治区","65":"新疆维吾尔自治区","71":"台湾省","81":"香港特别行政区","82":"澳门特别行政区","99":"海外"}}

var regions=request.responseText.parseJSON();
for(var k in regions.provinces)
{
alert(regions.provinces[k.toString()]);
}

另一个简单办法就是：
for (var k in regions.provinces)
if (regions.provinces.hasOwnProperty(k))
alert(...)
判断hasOwnProperty就将prototype中的都排除掉了