JS解析JSon数组，求大神

Question

{
"success": false,
"obj": "{\"phone_number\":\"1\",\"error\":\"0\",\"siStatus\":\"在用\",\"wjs_amount\":\"0.00\",\"ratePlan\":\"升级小灵通包月12元\",\"instanceUsage\":\"普通\",\"acc_Number\":\"\",\"userAddress\":\"让胡路区西苑街-22-4-501\",\"currentPrepay\":\"0.00\",\"lastTradeDate\":\"2017-09-13 15:29:47\",\"origAcctPrepay\":\"0.00\",\"specialBalanceForOne\":\"0.00\",\"prodType\":\"转联通小灵通\",\"chengKongInfo\":\"国内直拨,短信,灵通呼\",\"yearsEndDate\":\"非包年用户或包年资费已到期\",\"sumDueAmount\":\"0.00\",\"phoneNature\":\"私宅\",\"error_message\":\"\",\"acctPrepay\":\"0.00\",\"custName\":\"张军\",\"mcmt\":\" \",\"lastAmount\":\"0.00\"}",
"msgcode": null,
"map": null
}

我想取到obj下面的数据

Answer 1

var json = JSON.parse(str); //str为你原json格式的字符串
var obj = json.obj;