訪問二維數組JSON使用JavaScript

Question

可能重複：
I have a nested data structure/JSON, how can I access a specific value?

我現在用的是美國人口普查API，並從jQuery.get二維JSON數組結束了（）請求。我的結果（數據）是這樣的：

[["P0010001","NAME","state","county","tract"], ["2703","Census Tract 4001.01","17","119","400101"], ["5603","Census Tract 4001.02","17","119","400102"], ["4327","Census Tract 4002","17","119","400200"]]

它看起來完全像一個二維JavaScript數組，但我不能喜歡一個訪問它時，我嘗試：

var population = data; 
alert(population[1][0]); 

是否有辦法將json數組轉換爲javascript數組，或將其轉換爲字符串，然後可以將其放入數組中？

Answer 1

使用JSON.parse：

var population = JSON.parse(data); 
alert(population[1][0]); 

的jsfiddle：http://jsfiddle.net/6CGh8/