将两个长度不等的一维数组两两组合成二维数组

let arr1 = [0, 1, 2];
let arr2 = [0, 1];
let arr3 = [
  [0, 0],
  [1, 0],
  [2, 0],
  [0, 1],
  [1, 1],
  [2, 1],
];

根据arr1, arr2，循环组合得到arr3， 谢谢！

let arr1 = [0, 1, 2];
let arr2 = [0, 1];
let arr3 = [];
for (let ele2 of arr2) {
  for (let ele1 of arr1) {
    arr3.push([ele1, ele2]);
  }
}

let data = ['1','2','3'];
let array = ['3','4','5'];
data = data.map((key,value)=>[key,array[value]]);