Well written, always nice to see people using these methods.

Do keep in mind, depending on the array a native for loop can actually be the quicker/faster solutions. Especially filter and map can be pretty heavy according to some tests i've seen.

This is insightful, thanks for sharing!

A quick tip: You should add your code using code snippets rather than adding images. It's a better experience with syntax highlighting and great for SEO.

let filter = [10,10,20,30,50];

console.log(filter)

Append three backticks to achieve this like so:

Great job! keep going! 👍💥

It was a nice read about JavaScript Array methods pretty informative, Well done man awesome, Keep going doing well