Question
What does the code snippet to the right output by console.log?
React quiz · 28
Question
Code
1'infiniteLoopProtection:false'
2import * as React from "react";
3import { useState, useEffect } from "react";
4import { createRoot } from "react-dom/client";
5import { screen, fireEvent } from "@testing-library/dom";
6
7function App() {
8 const [state, setState] = useState(0)
9 console.log(1)
10
11 const start = Date.now()
12 while (Date.now() - start < 50) {
13 window.timestamp = Date.now()
14 }
15
16 useEffect(() => {
17 console.log(2)
18 }, [state])
19
20 Promise.resolve().then(() => console.log(3))
21
22 setTimeout(() => console.log(4), 0)
23
24 const onClick = () => {
25 console.log(5)
26 setState(num => num + 1)
27 console.log(6)
28 }
29 return <div>
30 <button onClick={onClick}>click me</button>
31 </div>
32}
33
34const root = createRoot(document.getElementById('root'));
35root.render(<App/>)
36
37setTimeout(() => fireEvent.click(screen.getByText('click me')), 100)