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how to use wp_ajax in wordpress

last weekend I try to implement ajax in wordpress plugin. The problem is, there is no reference that I can get from wordpress wiki as well as their documentation to show the detail of how to use wp_ajax in wordpress.

How ever, here is the solution that i get how to use wp_ajax in wordpress.
Step 1.
You need to create callback function to handle ajax ( wp_ajax ) request.

function my_ajax_update(){
if (isset($_POST['c'])){
//you can do what ever here

Step 2.
create add_action using wp_ajax hook.

add_action("wp_ajax_your_action_name", "my_ajax_update");

your_action_name is action name that you'll submit using ajax post or get in Step 3.

Step 3.
on jQuery post..

url_action = \'' . get_bloginfo('wpurl') . '/wp-admin/admin-ajax.php\'; url_action , { action:"your_action_name",c:"True" } ,function(data){
//your return result

continue... next post I will show you the full plugin code.


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