const arr1 = [

    {id: 1, name: 'aaa'},

    {id: 2, name: 'bbb'},

    {id: 3, name: 'ccc'},

    {id: 4, name: 'ddd'}

]

const arr2 = [

    {uid: 2, uname: 'eee'},

    {uid:4, uname: 'fff'}

]

/**

 * 两个数组对象通过某一字段比较返回数组1中符合条件的

 * @param arr1 数组1

 * @param arr2 数组2

 * @returns {*}

 */

function fun1(arr1, arr2) {

    return arr1.filter(v => arr2.some(val => val.uid === v.id))

}

console.log(fun1(arr1, arr2))

/**

 * 两个数组对象通过某一字段比较返回数组1中剩余的

 * @param arr1 数组1

 * @param arr2 数组2

 * @returns {*}

 */

function fun2(arr1, arr2) {

    return arr1.filter(v => arr2.every(val => val.uid !== v.id))

}