Common Javascript Interview Questions [ removing duplicates from array in javascript ]

Getting hired as a self taught web developer is already tough. Don't make it harder by not learning javascript fundamentals.

Check out this javascript interview questions freshers and learn how
find all duplicates in an array.

As always thank you for watching, and let me know in the comments what other javascript interview questions you would like me to cover.

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[CodingAfterThirty]

Thanks for checking out this video. Been doing a lot of interviews so figured I share some of the questions I have been encountering.

[LostRelicGames]

A good message here mate, always good to be refreshed on the fundamentals. I must admit, though I know the fundamentals, I'll often lean on google first result, to save me the mental energy. It's useful short term, but eventually leads for a level of complacency! :) I'm off to study JS docs! Thanks for the video man.

[justindlb]

Just found your channel. I really like your method of explaining and discussing topics. I’m 30 and trying to change my career into front end web development so I am so happy to find your channel.

[JordanAF]

I really needed this, it's so easy to forget this stuff!

[danieldweebler]

If you use a for loop and indexOf the time complexity will be O(n^2)
If you use a set you will get a time complexity of O(n)

const removeDuplicates = (items) => [...new Set(items)];

[gabrielfono]

wooo
it is great your answer
if you dont mind me to bring mine as well
Javascript has introduced a new datastructure called set()
const myArray = [ 'alpha, ...restOfTheItems ' ] ;
const nonDuplicateItems = ( )=> {
// down will return an object with non duplicate array
const item = New set( myArray )
// then we use the spread operator
const result = [ ... Item ]
return result
}
let's call that function
nonDuplicateItems()
we have that result of non duplicate item for sure

[kitkatk]

do they allow you to use google during these interview challenges?

[BusinessWolf]

I know for a fact there's a method for it, I just don't know exactly what it's called.