let arr1 = [1, 2, 3, 4, 5, 6, 7];
let arr2 = [4, 5, 6, 7, 8, 9, 0];
let arr3 = arr1.filter(i => arr2.includes(i));
// 或者 let arr3 = arr1.filter(i => arr2.some(j => j == i));
console.log(arr3)
//控制台输出： (4) [4, 5, 6, 7]
//复杂数据类型也可以
let arr1 = [1, 2, 3, 4, 5, 6, 7];
let arr2 = [4, 5, 6, 7, 8, 9, 0];
let arr3 = arr1.filter(i => arr2.includes(i));
// 或者 let arr3 = arr1.filter(i => arr2.some(j => j == i));
console.log(arr3)
//控制台输出： (4) [4, 5, 6, 7]
//复杂数据类型也可以
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