Properties and methods can be copied from one object to another object using the Object.assign() method.
Let's say you have 2 objects obj1 and obj2.
const obj1 = { name: "Object 1" };
const obj2 = { bio: "This is my bio" };
We can copy the properties and methods from obj2 to obj1 using the Object.assign() method.
const obj1 = { name: "Object 1" };
const obj2 = { bio: "This is my bio" };
// Copy from obj2 to obj1
Object.assign(obj1, obj2);
/*
obj1 - Result:
--------------
{
name: "Object 1",
bio: "This is my bio"
}
*/
- The method takes 2 parameters.
- The first parameter is the target object.
- The second parameter is the source object in which you want the contents to be copied.
- The method returns the target object.
If the target object has the same property name as the source object it will be overridden.
const obj1 = { name: "Object 1", age: 23 };
const obj2 = { bio: "This is my bio", age: 34 };
// Copy from obj2 to obj1
Object.assign(obj1, obj2);
/*
obj1 - Result:
--------------
{
name: "Object 1",
age: 34,
bio: "This is my bio"
}
*/
The property age: 23 in obj1 is overridden by the property age: 34 in obj2.