Split array into chunks of N length [duplicate]

Answer 1

It could be something like that:

var a = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j'];

var arrays = [], size = 3;
    
while (a.length > 0)
  arrays.push(a.splice(0, size));

console.log(arrays);

See splice Array's method.

Answer 2

Maybe this code helps:

var chunk_size = 10;
var arr = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17];
var groups = arr.map( function(e,i){ 
     return i%chunk_size===0 ? arr.slice(i,i+chunk_size) : null; 
}).filter(function(e){ return e; });
console.log({arr, groups})