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Fetch API Methods

XMLHttpRequest Object

The XMLHttpRequest object has been the primary way to make HTTP requests in JavaScript for many years. It provides a low-level API for sending and receiving data from a server.

Legacy Approach: XMLHttpRequest

Using XMLHttpRequest involves creating an instance of the XMLHttpRequest object, specifying the request parameters, and handling the response.

Fetch API: A Modern Approach

The Fetch API provides a more modern and streamlined approach to making HTTP requests. It offers a high-level API that simplifies the process and provides additional features.

XMLHttpRequest vs. Fetch API: Key Differences

XMLHttpRequest and Fetch API differ in several key aspects, including the way they handle requests, responses, and errors.

XMLHttpRequest vs. Fetch API: Advantages and Disadvantages

Both XMLHttpRequest and Fetch API have their advantages and disadvantages. XMLHttpRequest is a more established technology, while Fetch API is newer and more modern.

XMLHttpRequest vs. Fetch API: When to Use Each

The choice between XMLHttpRequest and Fetch API depends on the specific requirements of the application. XMLHttpRequest is suitable for legacy applications, while Fetch API is recommended for new projects.

How to Send Requests with Fetch API

To send a request using the Fetch API, you call the fetch() function with the URL as an argument. The fetch() function returns a Promise that resolves to the response.

The Fetch Request Process

The Fetch API request process involves several steps, including creating the request, sending the request, and handling the response.

Handling Responses with Fetch API

The Fetch API provides several methods for handling responses, including the .json() method to parse JSON responses and the .text() method to parse text responses.

Using Fetch API to Send GET Requests

GET requests are used to retrieve data from a server. To send a GET request using the Fetch API, you simply call the fetch() function with the URL as an argument.

Using Fetch API to Send POST Requests

POST requests are used to send data to a server. To send a POST request using the Fetch API, you specify the request body in the body property of the request object.

Using Fetch API to Send PUT Requests

PUT requests are used to update data on a server. To send a PUT request using the Fetch API, you specify the request body in the body property of the request object.

Using Fetch API to Send DELETE Requests

DELETE requests are used to delete data from a server. To send a DELETE request using the Fetch API, you simply call the fetch() function with the URL as an argument.

Dealing with Errors in Fetch API

The Fetch API provides several ways to handle errors, including the .catch() method to handle rejected Promises and the .finally() method to handle both resolved and rejected Promises.

Next Topic: Promise Chaining

Promise chaining allows you to handle multiple asynchronous tasks in a sequential manner. Follow us to learn more about promise chaining and how it can enhance your JavaScript code!