两个json 去重

Question

a = [{ "id": "1231" }, { "id": "9387" }, { "id": "68433" }, { "id": "43566" }]b = [{ "id": "1231" }, { "id": "43566" }]预期结果为 c = [{ "id": "9387" }, { "id": "68433" }]求教大神

Answer 1

var a = [{ "id": "1231" }, { "id": "9387" }, { "id": "68433" }, { "id": "43566" }],

b = [{ "id": "1231" }, { "id": "43566" }],

c = a.filter(function(o) {

  return b.every(function(e){

    return o.id !== e.id;

  });

});

alert(JSON.stringify(c));