从A数组中删除和B数组一样的数据

let A = [{id:1},{id:2},{id:3}];

let B = [{id:1},{id:2}];

for(let i=A.length-1;i>=0;i--){
    for(let j in B){
        if(A[i].id === B[j].id){
            A.splice(i,1);
        }
    }
}