比较两个数组-一个必须具有所有元素都在另一个数组中

Question

例如，我有一个数组[“ oranges”，“ apples”，“ people”，“ carrots”]

我有[“ oranges，” apples“]-我希望这是真的。 但是如果是[“ oranges，” shoes“]-我希望这是错误的。

Answer 1

使用every

const masterArr = ["oranges", "apples", "people", "carrots"];

const arr1 = ["oranges", "apples"];
const arr2 = ["oranges", "shoes"];

const isMatch = (arr, master) => arr.every(e => master.includes(e));

console.log(isMatch(arr1, masterArr));
console.log(isMatch(arr2, masterArr));