Small Ajax JavaScript library [closed]

Question

I'm looking for a very small (one liner) Ajax JavaScript library to add on the first line of a small script to make some requests.

I already tried:

• jx

• Microajax

But they do not work at all. Alternatives?

Answer 1

Here you go, pretty simple:

function createXHR() {     var xhr;     if (window.ActiveXObject)     {         try         {             xhr = new ActiveXObject("Microsoft.XMLHTTP");         }         catch(e)         {             alert(e.message);             xhr = null;         }     }     else     {         xhr = new XMLHttpRequest();     }      return xhr; } 

Documentation is here

Example:

var xhr = createXHR(); xhr.onreadystatechange = function() {     if (xhr.readyState === 4)     {         alert(xhr.responseText);     } } xhr.open('GET', 'test.txt', true) xhr.setRequestHeader('Content-type', 'application/x-www-form-urlencoded'); xhr.send() 

Update:

In order to do cross-domain scripting, you'll either have to call out to a local server-side proxy (which reads and echo's the remote data), or, if your remote service returns JSON, use this method:

var s = document.createElement('script') s.src = 'remotewebservice.json'; document.body.appendChild(s); 

Since JSON is essentially a JavaScript object or array, this is a valid source. You theoretically should then be able to call the remote service directly. I haven't tested this, but it seems to be an accepted practice:

Reference: Calling Cross Domain Web Services in AJAX

Answer 2

You can build your own version of jQuery that only includes the AJAX modules.

https://github.com/jquery/jquery#how-to-build-your-own-jquery
https://github.com/jquery/jquery#modules