更新数组的 object 的属性

Question

I have an array of objects and I need to update a few properties of a specific object inside the array and then run the findAndUpdateById call on it. I am trying to do this but its not updating and gives me an error of undefined name property. I guess I am not following the right procedure to update an update an object of javascript and because of this i need help. Here is my array

let arr = [
  {
    "_id": "1234",
    "customer": {
      "firstName": "John",
      "lastName": "Doe",
      "email": "johndoe@gmail.com",
      "address": "123 Caroline Street"
    }
  }  
]

Now I am recieving parameter like this that i need to update in my object

let ctx = {
  "params": {
      "changeObject": {
        "firstName": "Ali",
        "email": "ali@gmail.com"
      }
  }
}

Answer 1

Given: " I am getting the array of object by making.find call against id and there will be only one customer object in the received array "

 // Given let arr=[{"_id":"1234","customer":{"firstName":"John","lastName":"Doe","email":"johndoe@gmail.com","address":"123 Caroline Street"}}]; let ctx={"params":{"changeObject":{"lastName":"Ali"}}}; arr[0].customer = Object.assign(arr[0].customer, ctx.params.changeObject); console.log(arr);

Answer 2

I think you were using different properties changePayload and changeObject .

You may want to use the spread operator and map for this as well.

 let arr = [ { "_id": "1234", "customer": { "firstName": "John", "lastName": "Doe", "email": "johndoe@gmail.com", "address": "123 Caroline Street" } } ]; let ctx = { "params": { "changePayload": { "firstName": "Ali", "email": "ali@gmail.com" } } } arr = arr.map( data => ({...data, customer: {...data.customer, ...ctx.params.changePayload} }) ); console.log( arr );

NOTE: This will change all objects in your array, but that is what you were asking for.