CODEWITHSUNDEEP
angulartypescript
DarioN1
DarioN1

Reputation: 2552

Angular/Typescript - Fast way to assign object properties between two similar objects

I have two object classes that are very similar and I need to know if there is a way to easily assign all the common property values from object1 to object2.

This is the scenario:

let obj1:Product;
left obj2:OffertRow;

The common properties for instances are: idProduct, ProductName

Is there a way to do something like this in order to pass obj2 properties on obj1 one:

obj1 = obj2

Or I always have to specify the properties:

obj1.idProduct = obj2.idProduct;
obj1.Product = obj2.Product;
.... = ...

Thanks to support

Upvotes: 2

Views: 1185

Answers (3)

bugs
bugs

Reputation: 15313

An option is to create an array of the common properties and iterate over it.

let commonProps = ['idProduct', 'ProductName'];

commonProps.map(x => {
  obj1[x] = obj2[x]  // or use the spread operator {...obj2[x]} if you need to be more carefull
})

Alternative solution using Object.keys:

Object.keys(obj2)
  .filter(x => Object.keys(obj1).includes(x))
  .map(x => obj1[x] = obj2[x])

Upvotes: 0

davidxxx
davidxxx

Reputation: 131396

You could use Object.keys()

The Object.keys() method returns an array of a given object's properties names, in the same order as we get with a normal loop.

var obj1 = {}
var obj2 = {}
Object.keys(obj2).forEach(key2 => {
  Object.keys(obj1).forEach(key1 => {
    if (key1 === key2) {
      obj1[key1] = obj2[key1]
    }
  })
})

Upvotes: 1

Frede
Frede

Reputation: 701

Object.assign(obj1, obj2) ist what you are looking for.

https://developer.mozilla.org/de/docs/Web/JavaScript/Reference/Global_Objects/Object/assign

EDIT: sorry i thought you we're talking about JSON objects not classes. Wrong answer!

Upvotes: 0

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