js array equal parts

let newArr = [] //首先创建一个新的空数组。用来存放分割好的数组
let num = 3 //需要等分几份
for (let i = 0; i < data.length;) { 
	newArr.push(data.slice(i, i += num));
}
console.log(newArr) 

第二种
let index = 0;
let newArrOne = [];
let num = 3 //需要等分几份
while (index < data.length) {
	newArrOne.push(data.slice(index, (index += num)));
}
console.log(newArrOne)