Question

How to flatten part of nested array in JavaScript

Answer 1

let arr = [ 1, 7, [[3]], [[[2]]], [[[[[[[98]]]]]]] ];

arr = arr.flat(2);

console.log(arr);
 
  

   
/*
run:
   
[1, 7, 3, [2], [[[[[98]]]]]]
   
*/

 

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