When JavaScript communicates with a server using an API, it sends requests using different types of HTTP methods.
Each HTTP method tells the server what action you want to perform — such as getting data, sending new data, updating existing data, or deleting data.
Understanding HTTP methods is essential for working with APIs and building real-world web applications.
Common HTTP Methods
- GET – used to fetch data from a server
- POST – used to send new data to a server
- PUT – used to update existing data
- DELETE – used to remove data
These four methods cover most API interactions.
The GET method is used when you only want to read data.
It does not change anything on the server.
The POST method is used when you want to send new data to the server.
For example, submitting a registration form uses POST.
These examples show how different HTTP methods represent different actions.
By understanding HTTP methods, students gain the ability to communicate properly with APIs and build real-world, data-driven JavaScript applications.