jquert ajax取json数组

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$.getJSON("/createcard/getCardValue.do?cardKindId="+cardKindId,function(data){$.each(data,function(commentIndex,commnet){alert(commnet['FACE_VALUE']);});}); 其中commentIndex为data数据的索引，commnet为data数据循环的内容
 
取的json内容为：
[{"CARD_VALUE_ID":12,"FACE_VALUE":5,"OUTER_CODE":"12"},{"CARD_VALUE_ID":13,"FACE_VALUE":10,"OUTER_CODE":"13"},{"CARD_VALUE_ID":14,"FACE_VALUE":20,"OUTER_CODE":"14"},{"CARD_VALUE_ID":15,"FACE_VALUE":50,"OUTER_CODE":"15"},{"CARD_VALUE_ID":16,"FACE_VALUE":100,"OUTER_CODE":"16"}]