使用 Javascript 访问二维 JSON 数组
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Accessing a two dimensional JSON array with Javascript
提问by Krausers
Possible Duplicate:
I have a nested data structure / JSON, how can I access a specific value?
I am using the US Census API and end up with a two dimensional json array from a jQuery.get() request. My result (data) looks like this:
我正在使用美国人口普查 API 并最终从 jQuery.get() 请求得到一个二维 json 数组。我的结果（数据）如下所示：
[["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"]]
[["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"]]
It looks exactly like a two dimensional javascript array, but I cannot access it like one when I try:
它看起来完全像一个二维 javascript 数组，但是当我尝试时，我无法像访问它那样访问它：
var population = data;
alert(population[1][0]);
Is there a way to convert the json array into a javascript array, or to convert it to a string, which could then be put into an array?
有没有办法将json数组转换为javascript数组，或者将其转换为字符串，然后可以将其放入数组中？
回答by Adam
Use JSON.parse:
使用JSON.parse：
var population = JSON.parse(data);
alert(population[1][0]);
JsFiddle: http://jsfiddle.net/6CGh8/
JsFiddle：http: //jsfiddle.net/6CGh8/
