将数组填充到与ID匹配的数组内部的对象中

Question

I have a server response that comes back as such:

Array[2]
  0:Object
    user: "Howard",
    id:0
  1:Object
    user: "Robin",
    id:1,
    myArray: ["mary","john","gary"] // I want to add in here.
]

I then have an array that I created myself. I want to add this array to where an id that === 1 like my example above. I can only imagine I have to use the key of the object that matches id === 1

myArray=["mary","john","gary"]

Answer 1

Hopefully I'm not misunderstanding the question. just loop through the main array looking for id === 1, then access the myArray property and do what you need.

mainArray.forEach(function(object) {
    if(object.id === 1) {
        object.myArray = ["mary","john","gary"];
    }
}

Answer 2

You can use find to find the object you want, then add the array to it like this:

 function addToObject(arr, id, myArr) { var obj = arr.find(function(o) { // sear inside arr for the object with the id === 1 return o.id === id; }); if(obj) // if we found an object obj.myArray = myArr; // add the array myArr as a property to it } var arr = [{user: "Howard",id:0}, {user: "Robin",id:1}]; addToObject(arr, 1, ["some", "text"]); // add the array to the object with the id 1 console.log(arr); 

Note: I assumed the IDs are unique! So for an ID id there will be ay most one object with that ID.