Which one is correct way to Reverse a String
Anonymous Quiz
48%
str.split(""). reverse ().join("")
6%
[...str]. reverse ().join("")
44%
str.reverse()
1%
None
👍3
How is `+=` read correctly?
Anonymous Quiz
26%
Increament
59%
Assignment with addition
15%
Plus and Equal
💩3
What is Babel ?
Anonymous Quiz
38%
A Transpiler
12%
An Interpreter
21%
A Compiler
29%
Both Compiler & Transpiler
💩2
for(var i=0; i<10;i++){
console.log(i);
} console.log(i);
console.log(i);
} console.log(i);
Anonymous Quiz
15%
1,2,3,4,5,6,7,8,9,10
35%
0,1,2,3,4,5,6,7,8,9
33%
0,1,2,3,4,5,6,7,8,9,10
3%
9,9,9,9,9,9,9,9,9,10
14%
10,10,10,10,10,10,10,10,10,10
👍7
When do you use useLayoutEffect?
Anonymous Quiz
17%
To optimise for all devices
8%
To complete the update
45%
To change the Layout of the Screen
31%
When you need the browser to paint before the effects run
What is the use of the <noscript> tag in Javascript?
Anonymous Quiz
11%
Clears all the cookies and cache.
43%
The contents are displayed by non-JS-based browsers.
36%
Both A and B.
10%
None of the above.
👍2
💰 🤑 Bounty Program 🤑 💸
Hi @All
I'm sharing an opportunity to make money by sharing me your real Interview videos so that we'll have a collection of interview videos to support each other for the preparation. 😍
You can share your interview Videos at dev.roshann@gmail.com
⚠️ If you don't like please ignore it.
Hi @All
I'm sharing an opportunity to make money by sharing me your real Interview videos so that we'll have a collection of interview videos to support each other for the preparation. 😍
You can share your interview Videos at dev.roshann@gmail.com
⚠️ If you don't like please ignore it.
👍6
Frontend Interview Questions 🇮🇳 | ReactJs | NodeJs | JavaScript | HTML/CSS
💰 🤑 Bounty Program 🤑 💸 Hi @All I'm sharing an opportunity to make money by sharing me your real Interview videos so that we'll have a collection of interview videos to support each other for the preparation. 😍 You can share your interview Videos at d…
For any query 👉 @mr_rxn
a = [1, 2, 3, 4, 5];
console.log(a.slice(2, 4));
console.log(a.slice(2, 4));
Anonymous Quiz
41%
3, 4
9%
2, 3
42%
3, 4, 5
9%
2, 3, 4
console.log(parseInt("123Hello"));
console.log(parseInt("Hello123"));
console.log(parseInt("Hello123"));
Anonymous Quiz
23%
123 NaN
27%
123Hello Hello123
38%
NaN NaN
12%
123 123
👍7
Which of the following are closures in Javascript?
Anonymous Quiz
10%
Variables
39%
Functions
5%
Objects
47%
All of the above
👍4
var a = 1;
function bar() {
if (!a) { var a = 10; } console.log(a); } bar();
function bar() {
if (!a) { var a = 10; } console.log(a); } bar();
Anonymous Quiz
37%
10
42%
1
21%
undefined
👍8❤3
Channel name was changed to «Frontend Interview Questions 🇮🇳 | ReactJs | NodeJs | JavaScript | HTML/CSS»
function test(...args) {
console.log(typeof args);
} test(12);
console.log(typeof args);
} test(12);
Anonymous Quiz
12%
NaN
43%
Number
23%
Object
22%
Array
What is true for the keys given to a list of elements in React?
Anonymous Quiz
58%
Unique in the DOM.
32%
Unique among the siblings only.
6%
Do not require to be unique.
4%
None of the above.