Objects in JavaScript are flexible. You can add new properties, change existing values, and even remove properties when they are no longer needed.
This flexibility makes objects perfect for real-world applications where data keeps changing, such as user profiles, product details, and settings.
Learning how to manage object properties is an essential skill for every JavaScript developer.
Ways to Modify Object Properties
- Add new property using dot or bracket notation
- Update an existing property by assigning a new value
- Delete a property using the delete keyword
These operations help you control object data easily.
Here, a new property called city is added to the user object after it is created.
This shows how objects can grow as your data grows.
This example changes the value of the age property.
Updating properties is commonly used when user information changes.
This example shows how to remove a property that is no longer needed.
By mastering how to add, update, and delete object properties, students gain full control over their data and move closer to building real-world, professional JavaScript applications.