To merger properties of two objects, you can use the concept of {...object1,...object2,... N).
Example
Following is the code −
var firstObject = { firstName: 'John', lastName: 'Smith' }; var secondObject = { countryName: 'US' }; var mergeObject = {...firstObject, ...secondObject}; console.log(mergeObject);
To run the above program, you need to use the following command −
node fileName.js.
Here, my file name is demo307.js.
Output
This will produce the following output −
PS C:\Users\Amit\javascript-code> node demo307.js { firstName: 'John', lastName: 'Smith', countryName: 'US' }