how to convert array into comma separated string in javascript code example

Example 1: javascript array to comma separated string

var colors = ["red", "blue", "green"];
var colorsCSV = colors.join(","); //"red,blue,green"

Example 2: javascript array to string with comma

let numbers = [0, 1, 2, 3];
let numbersToString = numbers.toString();

console.log(numbersToString);
// output is "0,1,2,3"