JSFiddle - React, Tailwind, and code Playground

by kukicvladimir

JavaScript

var a = [];

function test() {
 setTimeout(function() {
  return [123, 345];
 }, 100)
}

function test2(callback) {
  setTimeout(function() {
    callback([123, 345]);
  }, 100)
}

a = test();
console.log(a);

test2(function(data) {
  a = data;
  console.log(a);
})