将数组B中的对象的属性传递给数组A

Question

假设我们有一个数组，其中包含多个对象。每个对象都有已定义的属性：

arr1 = [ 
    {name: "Harry", lastname: "Potter"}, 
    {name: "Charlie", lastname: "Brown"}, 
    {name: "Frodo", lastname: "Baggins"} 
] 

我们有第二个数组，其中包含arr1中对象的附加属性。在ARR2的对象是在同一个数量级ARR1：

arr2 = [ 
    {bestfriend: "Ron"}, 
    {bestfriend: "Snoopy"}, 
    {bestfriend: "Sam"} 
] 

有什么办法插入对象的属性在ARR2到ARR1？

预期的结果是

arr1 = [ 
    {name: "Harry", lastname: "Potter", bestfriend: "Ron"}, 
    {name: "Charlie", lastname: "Brown", bestfriend: "Snoopy"}, 
    {name: "Frodo", lastname: "Baggins", bestfriend: "Sam"} 
] 

Answer 1

arr1 = [{name: "Harry", lastname: "Potter"}, {name: "Charlie", lastname: "Brown"}, {name: "Frodo", lastname: "Baggins"}]; 
arr2 = [{bestfriend: "Ron"}, {bestfriend: "Snoopy"}, {bestfriend: "Sam"}]; 
for (var i=0; i < arr2.length; i++) { 
    for (var prop in arr2[i]) { 
    arr1[i][prop] = arr2[i][prop]; 
    } 
}