JavaScript How to edit value of an object using the reference? edit value object,edit object value javascript,php edit object

I have a big object array persons

persons = [{name:'john1'}, {name:'john2'},...]

I iterated the array and found the object I am interested to edit

objectToEdit = persons .find((person)=>person.name==='john1')

Now I created an edited object in immutable way (someOtherPerson = {name:'johnxx'})

objectFinal = {...objectToEdit, someOtherPerson}

Now I want to replace this objectFinal with objectToEdit in persons array, without having to traverse the array again. But doing objectToEdit =objectFinal , will just assign objectToEdited's reference to objectToEdit , without making any change in the persons array

Is there a clean way to achieve this without traversing the array?

Edit:

In this example, the object in persons jave just one key (i.e, name). This is to make question minimal. In my project, I have more than 30 keys.

Answer:1

If you want to edit an object in a list,in place, use Array.prototype.some

var persons = [{
  name: 'john1'
}, {
  name: 'jack5'
}]

var someOtherPerson = {
name: 'johnxx'
}

persons.some(function(person) {
  // if condition, edit and return true
  if (person.name === 'john1') {
    // use Object.keys to copy properties
    Object.keys(someOtherPerson).forEach(function(key) {
      person[key] = someOtherPerson[key]
    })
    // or use assign to merge 2 objects
    Object.assign(person, someOtherPerson);
    return true // stops iteration
  }
})

console.log(JSON.stringify(persons))
Answer:2

If you want to avoid mutating the objects in the original array, you might use .findIndex instead, and reassign the item in the array at that index:

const persons = [{name:'john1'}, {name:'john2'}];
const objectToEditIndex = persons.findIndex((person) => person.name === 'john1');
const someOtherPerson = {name:"johnxx"};
persons[objectToEditIndex] = {
  ...persons[objectToEditIndex],
  ...someOtherPerson
};
console.log(persons);
Answer:3

Doing this:

objectFinal = {...objectToEdit, someOtherPerson}

you lose the reference to the original objectToEdit object. To edit it, you can do

`objectToEdit.value = otherValue`.

PS: Having said that, you only lose reference to the first level object. If that object, contains another object or array, you have reference to it:

objectFinal.innerObject.value = otherValue;
Answer:4

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