SOURCE

let arr1 = [1,2,3,4,5,6,7,8,9,0];
let arr2 = [1,1,3,4,6];
//数组去重
let arr3 = [...new Set(arr2)];
console.log(arr3);
//求 交集
let result = [...new Set(arr1)].filter(item =>{
    let res2 = new Set(arr2);
    if(res2.has(item)){
        return true;
    }else{
        return false;
    }
});
console.log(result);
//并集

let result2 = [...new Set([...arr1,...arr2])];
console.log(result2);