获取json数据,提示undefined

{"result":[{PerformDate":"2017-07-0500:00:00","ay":"","bz":"","callbacks":[{}],"cfPun... {"result":[{PerformDate"
:"2017-07-05 00:00:00","ay":"","bz":"","callbacks":[{}],"cfPunishInfo":7010,"changeStopNote":"","chargeBackSale"
:"","chargeBackSaleNote":"","chargeDestroy":"","chargeDestroyNote":"","chargeStop":"","clnr":"照片"}]} json数据是这样返回的,但是用
var obj = eval(action);
alert(obj);
var propId11=obj.result[0].PerformDate;
提示 obj.result[0] is undefined
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yugi111
2017-07-11 · TA获得超过8.1万个赞
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var action = '{"result":[{"PerformDate":"2017-07-05 00:00:00","ay":"","bz":"","callbacks":[{}],"cfPunishInfo":7010,"changeStopNote":"","chargeBackSale":"","chargeBackSaleNote":"","chargeDestroy":"","chargeDestroyNote":"","chargeStop":"","clnr":"照片"}]}';
var obj = eval("("+action+")");
console.log(obj.result[0].PerformDate);
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