Javascript Split Array into Chunks

arrayChunks.js

function splitArrayIntoChunks(arr, chunkLen){
    var chunkList = []
    var chunkCount = Math.ceil(arr.length/chunkLen)
    for(var i = 0; i < chunkCount; i++){
        chunkList.push(arr.splice(0, chunkLen))
    }
    return chunkList
}

var testArray = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]
var chunks = splitArrayIntoChunks(testArray, 3)

console.log(chunks)