What is Ajax?
How to send Ajax request with XMLHttpRequest?
How to send Ajax request with Fetch API?
The Fetch API introduces a new global fetch() method that allows you to make HTTP requests similar to XMLHttpRequest (XHR) to get resources from the server. Unlike XMLHttpRequest, the Fetch API is based on promises, making the code concise and straightforward. The difference between the Fetch API and other Ajax HTTP libraries is that all modern browsers natively support the Fetch API and do not require additional libraries. Fetch API follows a request-response approach in which Fetch makes a request and returns a promise that resolves to a Response object. Below is an example of submitting an Ajax request to the ReqBin echo URL with Fetch API:
Benefits of using the Fetch API:
- Fetch API is flexible and easy to use
- The Fetch API is promise-based, which avoids nested callbacks.
- Fetch API supported by all modern browsers
- Fetch API follows the "request-response" principle
Disadvantages of using Fetch API:
- Fetch API does not send cookies by default
- In Fetch API CORS is disabled by default
How to send Ajax request with jQuery?
jQuery is a client-side library. It is free and powerful, relatively easy to set up and learn, and has several extensions and plugins available for everything. jQuery has a large community where you can find answers to many questions and get ready-made solutions. The ajax() method is used in jQuery to make Ajax calls. jQuery provides several methods for sending AJAX requests, such as $.post(), $.get() and $.ajax(). Below is an example of submitting an Ajax request to the ReqBin echo URL using jQuery:
Benefits of using the jQuery:
- jQuery is simple, flexible, and expandable
- jQuery is open source, which means rapid growth and developer freedom
Disadvantages of using jQuery:
How to send Ajax request with Axios?
Axios is one of the most popular promise-based HTTP clients available that works both on the client-side (in browsers) and on the server-side (NodeJ). Axios provides a single API for working with XMLHttpRequest and the HTTP interface. Axios, like Fetch, supports promises for handling asynchronous requests. In addition, it binds requests using a polyfill for the new ES6 promise syntax. Below is an example of submitting an Ajax request to the ReqBin echo URL using Axios:
Benefits of using the Axios:
- Promises are supported by default in Axios.
- Automatic transformations for JSON data
- Built-in support on the client-side for protection against XSRF
- Can capture requests or responses before they are completed
- Can set a response timeout
- Works on both Node.js and the browser
Disadvantages of using Axios:
- The Axios library adds extra kilobytes to load while the Fetch API is built into the browser
How to send Ajax request with SuperAgent?
SuperAgent is a lightweight and progressive AJAX library that focuses more on readability and flexibility. The Superagent library, like Axios, is suitable for Node.js and modern browsers. It provides the developer with a simple and understandable API that is convenient to work with. Below is an example of submitting an Ajax request to the ReqBin echo URL using SuperAgent:
Benefits of using the SuperAgent:
- SuperAgent is expandable
- SuperAgent has a nice interface for making HTTP requests
- SuperAgent supports chaining multiple calls to fulfill requests
- SuperAgent works in Node.js environment and in browsers
- SuperAgent supports progress indications for uploading and downloading data
- SuperAgent supports the chunked transfer encoding mechanism
Disadvantages of using SuperAgent:
- SuperAgent API doesn't follow standards.
- SuperAgent library adds extra kilobytes to load while the Fetch API is built into the browser