JSFiddle - React, Tailwind, and code Playground

JavaScript

var ay=[0,1,2,3,4,5,6,7,8,9];
var ay1 = [];
var ay2 = [];

for (var i = 0; i < ay.length; i++)
    if (i % 2) ay2.push(ay[i]);
    else ay1.push(ay[i]);
console.log(ay1, ay2);