javascript - Convert string to 2 dimension array in Javascript

Question

I've got this string which needs to be converted to an array:

var string = "[[Restaurants], [Restaurants], [Restaurants], [Caterers, Foods - Take-out]]";

I then need to be able to access its value like so:

var foo = arr[0];  //returns "Restaurant"
var bar = arr[3];  //returns "Caterers, Foods - Take-out"

I tried removing the first and last characters ( "[" and "]" ) but I was still left with a problem when splitting on "," because some of the value have commas inside them. Any ideas?

Answer 1

您可以使用split方法和map方法的组合。split创建数组并map通过返回一个新的来清理它Array：

var string = '[[Restaurants], [Restaurants], [Restaurants], [Caterers, Foods - Take-out]]';

var items = string.split('],').map(
    function(s) { return s.replace(/(\[\[| \[|\]\])/g, ''); }
);

http://jsfiddle.net/4LYpr/

Answer 2

由于您正在拆分并尝试创建一个数组，因此首先删除第一个（“[[”）和最后一个（“]]”），然后将字符串拆分为（“]，[”）。

Answer 3

简单的：

> a = "[[Restaurants], [Restaurants], [Restaurants], [Caterers, Foods - Take-out]]"
> b = a.slice(1).split(",")
> newB = []
> for (i=0;i < b.length;i++) {
    formatted = b[i].trim().slice(1,-2);
    newB.push(formatted);
}