尋找兩個JavaScript數組中的元素

Question

<script>
var array1 = ['2023-04-05','2023-04-06','2023-04-07'];    //array1
var array2 = ['2023-04-07'];    //array2
found1 = array1.find((val, index) => {    //在array1中查找日期
    return array2.includes(val);
});
$('.show').html(found1);
</script>

結果為2023-04-07。如何得到類似2023-04-05, 2023-04-06的結果

Answer 1

您可以使用Array#filter來取得第一個陣列中不在第二個陣列中的所有元素。

let array1 = ['2023-04-05','2023-04-06','2023-04-07'];
let array2 = ['2023-04-07'];
let res = array1.filter(x => !array2.includes(x));
console.log(res);