一个数组对象中在另一个数组中不存在，push到另一数组对象中

var array1 = [

    {"Num": "A", "Name": "t2"},

    {"Num": "B", "Name": "t2"}

];

var array2 = [

     {"Num": "A","Name": "t1"},

     {"Num": "B","Name": "t1"},

     {"Num": "C" ,"Name": "t3",age:'222'},

     {"Num": "D" ,"Name": "t4",age:'3333'}

];

for(var i = 0; i < array2.length; i++){

    var isExist = false;

    for(var j = 0; j < array1.length; j++){

        if(array1[j].Num == array2[i].Num){

            isExist = true;

            break;

        }

    }

    if(!isExist){

        array1.push(array2[i]);

    }

}

console.log(array1);