JavaScript converte uma variedade de strings em números
const toNumbers = arr => arr.map(Number);
toNumbers(['1', '2', '3','4']); // [1, 2, 3, 4]
Batman
const toNumbers = arr => arr.map(Number);
toNumbers(['1', '2', '3','4']); // [1, 2, 3, 4]var a = "1,2,3,4";
var b = a.split(',').map(function(item) {
return parseInt(item, 10);
});//convert array to string first and use this code
var y =x.toString().split(',').map(Number)
const stringArr = ["5", "4", "6", "2"];
const numArr = stringArr.map((item) => parseInt(item, 10));const atrArr = ['7', '2', '5']
let numbersArr = strArr.map(c => +c); //[7, 2, 5]