Question

How to print nested array in Node.js

Answer 1

const nestedArray = [ 1, 7, [[3]], [[[2]]], [[[[[[[100]]]]]]] ];
 
const flatten = arr => arr.reduce((a, b) => a.concat(Array.isArray(b) ? flatten(b) : b), []);

console.log(flatten(nestedArray));
   
    
  
     
/*
run:
     
[ 1, 7, 3, 2, 100 ]
     
*/

 

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Answer 2

const nestedArray = [ 1, 7, [[3]], [[[2]]], [[[[[[[100]]]]]]] ];
 
const flatten = arr => arr.reduce((a, b) => a.concat(Array.isArray(b) ? flatten(b) : b), []);

const flatArray= flatten(nestedArray);
 
for (let i = 0; i < flatArray.length; i++) {
    console.log(flatArray[i]);  
}
   
    
  
     
/*
run:
     
1
7
3
2
100
     
*/

 

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