Frontend Interview Preparation | Guess the output | one liner JS interview questions | Javascript

This video is a continuation of the series Guess the output in our preparation for frontend interviews. we will be covering one-liner questions that are oftenly asked in javascript interviews.

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[rishabhkunwar]

Three phases of event propagation are :-
1) Event Capturing :- Event capturing occurs when the event moves all the way down the elements from the top(The window object) to the event
target

2)Target Phase :- this the phase when the event.target element is reached or found

3) Event Bubbling:- In this phase the event first triggers on the innermost target element, and then successively triggers on the parents of the target element

Q2:-
1
Undefined
2
Here it is an IFEE so the function is called immediately in try an error is thrown and catch block runs here we calture the error in x and assign it to 1 so in catch block console.log(x) will give 1 then catch block is over and in next console.log(x) it will give undefined because the x will be 1 in catch block scope, then the third console.log(y) will give 2 because in catch block y is assigned to 2 it doesn't find y in its scope so it looks to lexical environment and found variable y and assign 2 to it
So the output will be
1
undefined
2

[vishalkadam]

Mam make a video ABT reverse no, string in js.. find duplicate no or char . Find how many duplicate and remove them

[harshithvenkatesh]

Belated Happy Teacher's day mam, got to know how resourceful this channel is

[panchumarthiramya]

Happy teachers day nd please do more videos on map and filter and reduce

[RAHULYADAV-rwxj]

Happy Teachers Day I Hope this channel gets millions of Suscribers as soon as Possible!!!