去除2个数组中不同的数字

已知数组 arr1和arr2，需求：判断arr1中与arr2中不同的数

   let arr1 = [
        {
            id: 1,
            name: 1,
        },
        {
            id: 2,
            name: 2,
        },
        {
            id: 3,
            name: 3,
        },
        {
            id: 3,
            name: 3,
        },

    ]
  let arr2 = [
        {
            id: 4,
            name: 4,
        },
        {
            id: 5,
            name: 5,
        },
        {
            id: 6,
            name: 6,
        },
        {
            id: 1,
            name: 1,
        },
        {
            id: 7,
            name: 7
        }
    ]

 let obj = {};
    let arrResult = [];
    arr2.forEach((item, index) => {
        obj[item.id] = true
    })
    // console.log(obj,'obj123')
    arr1.forEach((item, index) => {
        if (!obj[item.id]) {
            arrResult.push(item.id)
        }
    })