如何使用两个不同的数组或单个数组创建 2D

Question

I want output like this

items = [['red', 'blue', 'green'], ['small', 'medium', 'large']];

i have array item which has value items =['red', 'blue', 'green','small', 'medium', 'large']

Answer 1

if mutation is not a problem, then you might remove initial array until you move them 3 by 3 into new one.

const items = ['red', 'blue', 'green', 'small', 'medium', 'large'];

let itemList = [];

while (items.length > 0) {
    itemList.push(items.splice(0, 3))
}