let a = [1, 2, 3, 4, 5, 6, 7, 8];
let b = [1, 2];
let c = [3, 9];

function includes(arr1, arr2) {
  return arr2.every(val => arr1.includes(val));
}

console.log(includes(a, b));  //true

判断数组否包含另外一个数组_微信 微信图片_20210926142748.png