Question

How to remove undefined values from an array in JavaScript

Answer 1

let arr = [5, 1, '', undefined, false, 'javascript', undefined, null];
 
arr = arr.filter(x => x !== undefined);

console.log(arr);
 
   
     
     
/*
run:
     
[5, 1, "", false, "javascript", null]
     
*/

 

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