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

As a variant you can use combiantion _.map and _.ary methods from the lodash library. Whole transformation will be a more compact. Here is example from the official documentation:

_.map(['6', '8', '10'], _.ary(parseInt, 1));
// → [6, 8, 10]