Form Element AJAX Spinner Attachment Using jQuery

By  on  

Yesterday I showed you how to attach an AJAX spinner next to a form element using my beloved MooTools. Today I'll show you how to implement that same functionality using jQuery.

The XHTML

<select class="ajax">
	<option value="">-- Select a Site--</option>
	<option value="David Walsh Blog">David Walsh Blog</option>
	<option value="Script & Style">Script & Style</option>
	<option value="Band Website Template">Band Website Template</option>
</select>

<br /><br />

<input type="text" id="my-text" class="ajax" />

Elements with the "ajax" CSS class will be our target.

The jQuery JavaScript

$(document).ready(function() {
	//create image
	$('<img src="move-spinner.gif" id="spinner" />').css('position','absolute').hide().appendTo('body');
	//for every field change
	$('.ajax').change(function() {
		//get element position
		var position = $(this).offset();
		//position image
		$('#spinner').css({ top: position.top , left: position.left + $(this).width() + 30 }).fadeIn();
		//ajax
		$.post('<?php echo $_SERVER['REQUEST_URI']; ?>',{
			ajax:1,
			value: $(this).val()
		},function() {
			$('#spinner').fadeOut();
		});
	});
});

We inject the spinner image into the page and reposition it depending on which field is doing the request. Very simple!

Isn't JavaScript fun? Oh yeah...and it makes the user experience better too.

Recent Features

  • By
    JavaScript Promise API

    While synchronous code is easier to follow and debug, async is generally better for performance and flexibility. Why "hold up the show" when you can trigger numerous requests at once and then handle them when each is ready?  Promises are becoming a big part of the JavaScript world...

  • By
    Facebook Open Graph META Tags

    It's no secret that Facebook has become a major traffic driver for all types of websites.  Nowadays even large corporations steer consumers toward their Facebook pages instead of the corporate websites directly.  And of course there are Facebook "Like" and "Recommend" widgets on every website.  One...

Incredible Demos

  • By
    MooTools Zebra Table Plugin

    I released my first MooTools class over a year ago. It was a really minimalistic approach to zebra tables and a great first class to write. I took some time to update and improve the class. The XHTML You may have as many tables as...

  • By
    Digg-Style Dynamic Share Widget Using the Dojo Toolkit

    I've always seen Digg as a very progressive website. Digg uses experimental, ajaxified methods for comments and mission-critical functions. One nice touch Digg has added to their website is their hover share widget. Here's how to implement that functionality on your site...

Discussion

  1. Ben

    Sweet! Thanks David!

  2. great job!.. how to implement it with asp.net?

    thanks

  3. Have you given any thoughts to Select Dropdowns, MooTools, and CSS Print? I’ve been hard pressed to find good resources, and judging from this article I’m guessing you may have something valuable to say. Thanks in advance!

  4. Very interesting list. It’s a great addon to what I’m already doing. Thanks.

  5. thanks, i have a question for u !
    i want to used AJAX load JSON cross orther domain ! has the solution for that ?

Wrap your code in <pre class="{language}"></pre> tags, link to a GitHub gist, JSFiddle fiddle, or CodePen pen to embed!