如何在JavaScript中将字符串转换为数组？

Question

[["SFO",37.77493,-122.41942],["LAX",34.05223,-118.24368]]

这是我的字符串，我想将其转换为：

arr[0] = ["SFO"....
arr[1] = ["LAX"...

修改

让我澄清一下：

var str = '[["SFO",37.77493,-122.41942],["LAX",34.05223,-118.24368]]'

Answer 1

您可以使用JSON.parse：

JSON.parse('[["SFO",37.77493,-122.41942],["LAX",34.05223,-118.24368]]')

IE7及以下需要：

<!--[if lt IE 8.]>
<script src="http://ajax.cdnjs.com/ajax/libs/json2/20110223/json2.js"></script>
<![endif]-->

JSON.parse将字符串转换为javascript对象。数组是对象。上面的字符串将解析成一个数组：

var array = JSON.parse('[["SFO",37.77493,-122.41942],["LAX",34.05223,-118.24368]]')
alert ( typeof array ); // object
alert ( array instanceof Array); // true

Answer 2

var arr = [["SFO",37.77493,-122.41942],["LAX",34.05223,-118.24368]];
console.log(arr[0]); // ["SFO", 37.77493, -122.41942]
console.log(arr[1]); // ["LAX", 34.05223, -118.24368]