js json[0].value无法取到值?

Question

varstr_json=[['a','a'],['b','b'],['c','c']];varjson=eval('('+str_json+')');这么写json[0].value为什么取不到值...

Answer 1

[['a','a'],['b','b'],['c','c']];这个东西不是json格式应该是{"a":"aa","b":"bb","c":"cc"},取法.key获取键；[i].value 获得值