How to make an HTTP request in Javascript

There are several ways to make HTTP requests in JavaScript, including using the built-in XMLHttpRequest object or using a modern alternative such as the fetch API. 

Here's an example of how you could make a GET request using XMLHttpRequest: 

 

 

And here's an example of how you could make a GET request using the fetch API: 

 
 
 
Note that the fetch API is not supported in older browsers, so you might need to include a polyfill if you need to support those. 

 

You can include a polyfill for the fetch API by including a library that provides the implementation, such as the fetch polyfill. You can either download the library and include it in your project, or you can include it directly from a CDN. 

For example, to include the fetch polyfill from the CDN https://cdn.jsdelivr.net/npm/whatwg-fetch@3.0.0/dist/fetch.umd.js, you would add the following script tag to your HTML file: 

<script src="https://cdn.jsdelivr.net/npm/whatwg-fetch@3.0.0/dist/fetch.umd.js"></script> 
 

After including the polyfill, you can use the fetch API in your JavaScript code just as you would in a modern browser that supports it natively.