Break array into 4 arrays and store those arrays within a new array javascript/Jquery

Question

I have an array which I would like to break into 4 pieces (4 arrays), and then store those 4 arrays into another array.

This is what I have so far:

a=[1,2,3,4,5,6,7,8,9,10,11,12]

while(a.length) {
     a.splice(0,3); 
}

possible duplicate of [Split array into chunks](http://stackoverflow.com/questions/8495687/split-array-into-chunks) — Blauharley, May 16 '15 at 21:48

score 2 · Accepted Answer · answered May 16 '15 at 21:47

That's a good start. You also need an array to put the arrays in:

var a = [1,2,3,4,5,6,7,8,9,10,11,12];
var result = [];

while (a.length > 0) {
  result.push(a.splice(0,3));
}

(Using while (a.length) works fine, but I like to use the more specific condition while (a.length > 0).)

1 Answers1