Higher Order Functions Interview Question| Modern Javascript 2021

Higher order functions are those function which takes a function as a argument or return a function as output.

Functions are the first class citizen in javascript, it means function act like any other type in javascript. So we can assign function to a variable, we can pass function as a argument to another function , a function can return a function, As function are first class citizens because of that Higher order functions are possible in javascript.

A Function that takes another function as argument, that function is HIGHER ORDER FUNCTION and that argument which we have passed to Higher order function is called Callback functions.

In this video, I have explained how you should write your functions so that you can optimised your code and can clear the coding round during your interview.

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#javascript #NishaSingla #higherorderfunctions

[MrJohncenaraw]

Very useful..i am happy understand my long time doubts. Thank you

[zenchoudhary]

1:31 second Syntex is wrong you forget to write =>

[urvishavachhani]

Thank you Nisha for simply awesome explanation. Your deep copy and shallow copy video helped me in my interview.

please make more and more videos for front end interviews :)

[RakeshKumar-brrg]

Plz explain pure and impure functions. Thanks for your great videos.

[phxqlpe]

Your video are very helpful to me. thanks a lot. should be twice instead of square.

[narendra]

Nisha, it was really helpful tutorial pls make one complete playlist on interview javascript these thing

[durgaprasadbrahmandlapally]

Hi Nisha, your explanation next level,
I thought instead of citizen, it's object.

[sar]

Just a correction, square is number * number

[shubhampatil]

why everyone does not give real life usecase of hof?

[ankitaggarwal]

Please upload more videos of Advance Javascript.

[satyasanghavi]

Hi nisha, your videos are good. Can you please make videos on oops in javascript

[IraquiRizwanVlogs]

Nice video ma'am. But square means number*number . Not multiple with 2. 😉

[SingajogiSudhakar]

= function(callback) {
return this.reduce((newArray, element) => {

return newArray;
}, []);
}


let data = [1, 2, 3, 4, 5, 6];

const op = data.repEachElement((el) => el);

console.log(op);

[Dev-fkrn]

It would be much obliged by us if upload notes for the same as well..🎉

[asanmohamed]

@Nisha singla could you pls do “Joseph’s problem “ using recursive in java script

[akrammohammed]

Please give me some project ideas to implement rxjs in angular..

[mdnasiransari]

In function x argument is fn but inside the function you are doing fn() I didn't not understand why you are doing this

[bharatmoger]

Please help me on this :
write a function which will display all the values with 'value' key in es6

let multiLevelData = {
value: 2,
data: [{
value: 3,
data: [{
value: 4,
data: [{
value: 6,
data: []
}]
}, {
value: 5,
data: []
}]
}]
}

[nazrealam]

square of 10 is 100, how come 20, that is multiplication of 2.