JSFiddle - React, Tailwind, and code Playground

by antelopelovefan

JavaScript

var main = [];

var t1 = [1,2,3,4,5,6,7,8,9];
var t2 = [10,11,12,13,14,15];

main = main.concat(t1);
console.log(main);

main = main.concat(t2);
console.log(main);