map, reduce, filter, forEach, find | Javascript Array Methods | Javascript Interview Q&A

Hey guys, here i am with this video about various Array Methods like map, filter, foreach, reduce and find. These are really helpful in solving. the coding problems and in day to day programming as well. I have tried to explain these at very basic level so that you can understand the use of these.

I hope you get a good understanding from this video. If you like it please like and share it and do let me know your feedback in the comment section. Stay tuned and happy learning.. :)

Good Luck,
Sofia Goyal

If you like my work you can support me and buy me a coffee at:

01:18 What are higher order functions
01:31 What is a callback function
03:16 What is forEach method?
05:18 difference between for loop and foreach
08:08 What is map method?
10:05 Method chaining using map
11:25 What is filter method?
14:10 What is find method?
14:23 Difference between find and filter method?
18:03 What is reduce method?

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[hrf]

Please make a video on solving all these methods and mentions which methods/techniques are widely used by big companies and thank you for the video.

[pranavpawar]

Your explanation is really nice.... Thanks for such videos

[das]

Hmm I could only figure out a recursive approach for flattening arrays. I'm guessing some kind of while loop will work, but I'm not certain how to do it within reduce.

[bsslnaveen]

ma'am your explanation is awesome please ma'am node express par Bhi video bnao na

[anandwadsinge]

const filteredArray = arr.filter((v, i) => arr.indexOf(v) === i)
console.log(filteredArray)

[ashitkamila]

Please kindly make video on denouncing and throttling functions

[damo]

The value of 'this' is lexical(static) scoped or dynamic scoped? I have a confusion. I think it's dynamic scoped because it gets its value through execution context. But I have already learned, JavaScript only uses lexical scope.

[DeepakGupta-hjdv]

Good Sofia mam..next video call apply bind pr bnana

[basavakiranullagaddi]

// filter to remove duplicates inside array
// const newArr = curArr.filter((v, i) => curArr.indexOf(v)===i);
// console.log(newArr);