Question

How to remove duplicate elements from array JavaScript

Answer 1

let arr = [3, 4, 2, 3, 3, 2, 5, 6, 5, 5, 5, 7, 8, 8, 8, 9, 1, 1, 1, 1, 1];

arr = [...new Set(arr)];

console.log(arr);


     
     
     
/*
run:
     
[3, 4, 2, 5, 6, 7, 8, 9, 1]
     
*/

 

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Answer 2

let arr = ['javascript','java','php','c','c++','c','c++','php','php'];

arr = [...new Set(arr)];

console.log(arr);


     
     
     
/*
run:
     
["javascript", "java", "php", "c", "c++"]
     
*/

 

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