Stack not clear yet Event loop kicks in

[innokria]

console.log('first call');
setTimeout(function timeout() {
console.log("second call");
}, 5000);
alert('a')
setTimeout(function tim() {
console.log("second scoend call");
}, 2000);

console.log("third call");

---

Note: alert call is still in stack but then event loop kicks in and execute timeout

[Philip Roberts]

It's tripping up on alert which is unsupported in the runtime.