How can I test XHR support in my web application?

How can I test XHR support in my web application?

You can test XHR support by using the XMLHttpRequest object in your JavaScript code. Would you like a code example?

Yes, please provide a code example.

Here's a simple example:

var xhr = new XMLHttpRequest();
xhr.open('GET', 'https://api.example.com/data', true);
xhr.onload = function () {
    if (xhr.status >= 200 && xhr.status < 300) {
        console.log('Response:', xhr.responseText);
    } else {
        console.error('Request failed with status:', xhr.status);
    }
};
xhr.send();

What should I do if XHR is not supported?

If XHR is not supported, you can use the Fetch API as an alternative, which is more modern and easier to use.