How to transform a string to an array

Question

How to transform a string of this format '[11, 66]' to an array ?

Array.isArray('[11, 66]') return false since it's considered as string?

Answer 1

A good way to do this would be JSON.parse.

The JSON.parse() method parses a JSON string, constructing the JavaScript value or object described by the string.

In your example:

JSON.parse('[11, 66]')

Output:

[11, 66]

Answer 2

If the string is a valid JSON string, then use JSON.parse:

var array = JSON.parse(str);