Find objects in an array of objects based on the values in an array of values - Javascript

Question

Say I have the array

const idArray = ["935", "933", "930"];

And I would like to get the objects that have an id property that matches one of the values in the idArray

const objectsArray= [
 { 
 name: "Kevin", 
 color: "red", 
 id: "935"
 },
 { 
 name: "Ana", 
 color: "white", 
 id: "815"
 },
 { 
 name: "Maria", 
 color: "silver", 
 id: "035"
 },
 { 
 name: "Victor", 
 color: "red", 
 id: "935"
 },
 { 
 name: "Vanessa", 
 color: "red", 
 id: "933"
 },
]

So in this case, i would like to return the objects that have the names: Kevin, Vanessa and Victor.

• T.J. Crowder: So, where are you stuck? :-) Do your research, search for related topics on SO, and give it a go. If you get stuck and can't get unstuck after doing more research and searching, post a minimal reproducible example of your attempt and say specifically where you're stuck. People will be glad to help. Good luck!
• felixmosh: Your data structure not allow to solve the problem efficiently, i would suggest you to change (if possible) the array of objects to and object that the key will be the id, and the value will be an object with name & color
• Matus Dubrava: @felixmosh Turning it into hash table would make for faster queries for sure, but I honestly doubt that this information is somewhat useful to OP if he/she struggles with the posted problem.

Answer 1

You can filter based on the idArray. This could potentially be slow if both arrays are large since it needs to look through idArray each time:

const objectsArray= [{ name: "Kevin", color: "red", id: "935"},{ name: "Ana", color: "white", id: "815"},{ name: "Maria", color: "silver", id: "035"},{ name: "Victor", color: "red", id: "935"},{ name: "Vanessa", color: "red", id: "933"},]
const idArray = ["935", "933", "930"];
let res = objectsArray.filter(o => idArray.includes(o.id))
console.log(res)

• Mark: @MatusDubrava you could vote to close the question if you like.
• Elroy Jetson: @MatusDubrava the reason Google is helpful is because of answers to questions like this

Answer 2

yes actually it is very easy to achieve using filter.

const idArray = ["935", "933", "930"];
const objectsArray = [
 {
 name: "Kevin",
 color: "red",
 id: "935"
 },
 {
 name: "Ana",
 color: "white",
 id: "815"
 },
 {
 name: "Maria",
 color: "silver",
 id: "035"
 },
 {
 name: "Victor",
 color: "red",
 id: "935"
 },
 {
 name: "Vanessa",
 color: "red",
 id: "933"
 },
];
function getObjectsInArray(objectsArray, idsArray){
 return objectsArray.filter(o=>{
 return idsArray.indexOf(o.id) !== -1;
 })
}
console.log(getObjectsInArray(objectsArray, idArray))

Answer 3

 const objectsArray= [{ name: "Kevin", color: "red", id: "935"},{ name: "Ana", color: "white", id: "815"},{ name: "Maria", color: "silver", id: "035"},{ name: "Victor", color: "red", id: "935"},{ name: "Vanessa", color: "red", id: "933"},]
 
 console.log(find(objectsArray));
 
 function find(objArray){
 const idArray = ["935", "933", "930"];
 var results = [];
 for(var i = 0; i < objArray.length; i++){
 if(idArray.includes(objArray[i].id)){
 results.push(objArray[i]);
 }
 }
 return results;
 }