using jquery/ajax to send/update div when link is clicked - php

Question

I have 2 layers that i need to update individually if a user clicks on either of them.
<div id=wrapper>
<div id=upvote>
//This div can be filled by upvote.php?id=X
<? echo getUpVote(); ?>
<a href=#><img src=upv.png></a>
</div>
<div id=downvote>
//This div can be filled by downvote.php?id=X
<? echo getdownVote(); ?>
<a href=#><img src=downv.png></a>
</div>
</div>
When the user clicks the up or down vote image, i need to fade out the contents of the div, make an ajax call to the respective php file (get request), and fade in the loaded content.
How can i do this?

Answer 1

Attach a click handler to the anchor tags. Find which url to use given the id of the containing div, then invoke load to replace the contents of the wrapper. Fade out/in at the appropriate points. Make sure that you return false from the anchor click handler to cancel the default action.
$('#upvote,#downvote').find('a').click( function() {
var url = $(this).closest('div').attr('id') + '.php?id=X';
$('#wrapper').fadeOut();
.load( url, function() {
$('#wrapper').fadeIn();
});
return false; // cancel click action
});

Answer 2

To add a click handler to an element in jQuery you can do this:
$("#upvote").click(clickHandler);
Where clickHandler is a function. Since you want to fade Out an image you can do this:
$("#upimg").hide('slow');
will cause an element with id='upimg' to disappear slowly. You can also use fadeTo(opacity) to achieve a similar effect.
The AJAX call can be made with a call to load.
$('#div').load('url', {}, callback);
where an element with id='div' will be populated with the result of calling url, the {} is optional and callback is a function that you can include to execute after the load. The callback function may be used to fadeIn the new content.
var clickHandler = function(){
$("#upimg").hide('slow');
$('#div').load('url', {}, callback);
}
var callback = function(){
$('#div').show('slow');
}

Answer 3

AJAX request can be made with $.get and you can fade the DIV using jQuery's animation functions like fadeOut
Here is some code on how you might acchive what you want:
$( '#IdOfOneAnchor' ).click ( function () {
var myDiv = $( '#IdOfYourDiv' );
myDiv.fadeOut ();
$.get (
'url/to/your/script.php',
{
// put params you need here
},
function ( response ) {
myDiv.html ( response ).fadeIn ();
}
);
return false;
} );
off course you will have to change the selectors to match your DIVs/links ...