JSFiddle - React, Tailwind, and code Playground
JavaScript
console.log(1);
for (var i=0;i<1000000;i++) setTimeout(function(){
console.log(2);
},0);
console.log(3);
console.log(1);
for (var i=0;i<1000000;i++) setTimeout(function(){
console.log(2);
},0);
console.log(3);