Frontend Interview Questions ๐Ÿ‡ฎ๐Ÿ‡ณ | ReactJs | NodeJs | JavaScript | HTML/CSS
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Frontend Interview Questions ๐Ÿ‡ฎ๐Ÿ‡ณ | ReactJs | NodeJs | JavaScript | HTML/CSS pinned ยซ๐ŸŽฅ๐ŸŽฌ Hey everyone, I'm excited to share my new YouTube video with you! ๐Ÿ”ฅ๐Ÿ™Œ In this video, I've created a Senior frontend interview (mock) that covers topics from JavaScript & advance ReactJS ๐Ÿค“๐Ÿ’ป ๐Ÿš€ Whether you're preparing for an upcoming interview or just wantโ€ฆยป
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โค11๐Ÿ‘2
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Guess the output

const value = [1, 2, 3] + [4, 5, 6]; console.log(value);
Anonymous Quiz
57%
[1, 2, 3, 4, 5, 6]
18%
โ€œ123456โ€
4%
15
21%
1,2,34,5,6
๐Ÿ‘14โค7
Guess the Output
console.log(true && โ€œHiโ€ && โ€œHelloโ€)
Anonymous Quiz
25%
Error
49%
Hi, Hello
7%
Hi
19%
Hello
๐Ÿ‘18
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what will be the output ?
๐Ÿ‘26
which one of the following can be used to shorten this code?

1. A
2. B
3. C
4. None
๐Ÿ‘44โค1
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โค9๐Ÿ‘1
Guess the output
var output = (function(x) {
delete x; return x; })(0); console.log(output);
Anonymous Quiz
31%
0
18%
error
46%
undefined
4%
true
๐Ÿ‘6
What will be the output ?

1. undefined

2. error

3. 1

4. 0
๐Ÿ‘18โค4๐Ÿ‘Ž2
console.log(typeof typeof 1);
Anonymous Quiz
40%
number
28%
string
15%
object
17%
undefined
๐Ÿ’ฉ7๐Ÿ‘1
Guess the output
let x = [3,4,5,6,7][1,2,3]
console.log(x)
Anonymous Quiz
42%
[3,4,5,6,71,2,3]
23%
Undefined
25%
error
10%
6
๐Ÿ‘16
Guess the output
let x = 2;
let y = (x++, 10) console.log(x, y)
Anonymous Quiz
17%
2, 310
45%
3, 10
21%
2, 10
16%
Error
๐Ÿ‘4
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โค2๐Ÿ‘2
Guess the output.
console.log( [3] * [5] );
Anonymous Quiz
16%
35
44%
15
19%
Undefined
21%
NaN
๐Ÿ‘24