How can i remove duplicated element in array

Question

Let's say that i hsve this array [1,2,5,2,4,1,2]
How can i remove the duplicated elements to have like this array: [1,2,4,5]

Answer 1

https://www.sololearn.com/learn/JavaScript/2980/?ref=app

Use set.
Then, loop the set to display the elements

Answer 2

https://code.sololearn.com/Wg8JkYnrm79y/?ref=app