How to stop event bubbling?
Anonymous Quiz
12%
event.block()
21%
event.stop()
61%
event.stopPropagation()
7%
See answer
❤1
What does const actually mean?
Anonymous Quiz
22%
Cannot be changed
26%
Cannot be reassigned
47%
Both
5%
See answer
❤5
🔥5❤1👍1👎1
What does document.querySelector() return?
Anonymous Quiz
38%
HTMLCollection
25%
NodeList
31%
First matching element
7%
See answer
❤1👍1
console.log([1, 2, 3].filter(x => x > 1));
Anonymous Quiz
73%
[2, 3]
9%
[1, 2]
13%
true
5%
See answer
👍1
How to clone an object correctly?**
let user = {name: 'John'}.
let user = {name: 'John'}.
Anonymous Quiz
11%
let copy = user;
56%
let copy = {...user};
27%
let copy = user.clone()
6%
See answer
👍1
What will happen?
const arr = [1, 2, 3]; arr[10] = 5; console.log(arr.length);
const arr = [1, 2, 3]; arr[10] = 5; console.log(arr.length);
Anonymous Quiz
24%
3
29%
10
34%
11
13%
See answer
👍1
Why does this Timer component cause a memory leak?
Anonymous Quiz
26%
setCount is wrong inside interval
13%
React can’t handle intervals
43%
Needs to use setInterval in useEffect
18%
See Answer
👍3❤2🤔1
What will the code log
Anonymous Quiz
32%
{ name: 'John' } then { name: 'Bob' }
11%
{} then { name: 'Bob' }
25%
{ name: 'John' } then { name: 'John' }
13%
Error will be thrown
20%
See answer
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