Node.js convert get data into array

I am receiving data as such from URL.The URL is

data=%5B1%2C2%2C3%2C4%2C0%5D

which decodes to [1,2,3,4,0].

I have parsed this data using the below snippet

var queryObj = querystring.parse( theUrl.query );

But I think its not an array.How do I convert it into array.I have used toArray()method but in vain.Thankx in advance.

Looks like your data is actually JSON. Parse it like this:

JSON.parse(querystring.parse(theUrl.query));