How to convert a string of numbers to an array of numbers?

Question

I have below string -

var a = \"1,2,3,4\";

when I do -

var b = a.split(\',\');

I get b as

Answer 1

This is very simple.Such as:

["1", "2", "3", "4"].map(i=>Number(i))

you can run the demo.

let result = ["1", "2", "3", "4"].map(i=>Number(i));
console.log(result);