ES6 | Merge Objects

Last Updated : 22 Nov, 2019

We can merge two JavaScript Objects in ES6 by using the two popular methods. The methods are listed below:

Object.assign() method
Object spread syntax method

Both the methods are described below with the proper example:

Method 1: To marge two object we will use Object.assign() method.

Syntax:
```
Object.assign(target, ...sources)
```

Example:

<script> 
  
    // An Object
    var obj1 = {1 : "Geeks", 2: "for"};
    var obj2 = { 3 : "Geeks"};
      
    // Using Object.assign()
    Object.assign(obj1, obj2);
      
    // Printing object
    for (var key of Object.keys(obj1)) {
        document.write(key + " => " + obj1[key] + "</br>")
    }
</script> 

Output:
```
1 => Geeks
2 => for
3 => Geeks
```

Method 2: In this method, to marge two object we will use Object spread syntax.

Syntax:
```
var objClone = { ...obj };
```

Example:

<script> 
  
    // An Object
    var obj1 = {1 : "Geeks", 2: "for"};
    var obj2 = { 3 : "Geeks"};
      
    // Using Object spread syntax
    var obj = {...obj1, ...obj2};
      
    // Printing object
    for (var key of Object.keys(obj)) {
        document.write(key + " => " + obj[key] + "</br>")
    }
</script> 

Output:
```
1 => Geeks
2 => for
3 => Geeks
```

My Personal Notes

Related Articles