JS遍历Json字符串中键值对先转成JSON对象再遍历

1、将Json字符串转换成JSON对象

rush:js;"> var t='{"firstName": "cyra","lastName": "richardson"}'; var obj = eval('(' + t + ')');

2、遍历读取键值对

rush:js;"> for(var str in obj){ alert(str+'='+obj[str]); }