将字符串转换为数组，Javascript

Question

I have a string which looks like that:

[ [a,b,c],[a,b,c],[a,b,c] ]

I'd like to change it into an array of arrays. Do you know how can I do it?

Answer 1

如果您的字符串是有效的JSON数组，则可以使用JSON.parse ：

var anArray = JSON.parse(arrayString)

Answer 2

If your string is actually like this (valid JSON):

var string = '[["a", "b", "c"], ["a", "b", "c"], ["a", "b", "c"]]';

then you can do

console.log(JSON.parse(string));

[["a", "b", "c"], ["a", "b", "c"], ["a", "b", "c"]]

---

With

var string = "[[a,b,c],[a,b,c],[a,b,c]]";

there is not much you can do as it isn't valid JSON, and a,b,c aren't defined. You will have to massage your "string" more to make it at least valid JSON.

Answer 3

Well, you could try to split it on the "["-chars while ignoring the "]"-characters.

var str = "[[a,b,c],[a,b,c],[a,b,c]]"
var splitted = str.split("[");
var outerArray = [];
for(var i in splitted){
    var token = splitted[i].replace(/]/g, "");
    if(token.length > 0){
        var innerArray = token.split(",");
        if (innerArray.length > 0)
            outerArray.push(innerArray);
    }
}

This is definitly not elegant, and may be prone to errors, due to unhandled whitespaces or empty strings. But this may be a way you could go...