javascript convert string into array of int with brackets [duplicate]

Question

I have a string that contains an array with numbers in square bracket like this [1, 2,3, 4]. I want convert that string into array of integers. I can use split function but I also need to strip of square brackets and remove spaces if any between the numbers.

Answer 1

if you already have the string like this "[1, 2,3, 4]" JSON.parse will do

var arr = JSON.parse( "[1, 2,3, 4]" );