搜狐IP地址查询接口(默认GBK):http://pv.sohu.com/cityjson
var returnCitySN = {"cip": "183.64.76.242", "cid": "440100", "cname": "广东省广州市"};
搜狐IP地址查询接口(可设置编码):http://pv.sohu.com/cityjson?ie=utf-8
示例,搜狐API
<script>
$.getScript('http://pv.sohu.com/cityjson',function(result){
alert(returnCitySN.cname)
});
</script>