convert array as string in javascript code example

Example 1: javascript convert in a string the items of an array

const arr = [1, 2, 'a', '1a'];
const str = arr.toString();
console.log(str); //> "1,2,a,1a"

Example 2: how to print a array js

var array = [1,2,3]

for(var i = 0; i < array.length ; i++){
    console.log(array[i])
}