do_action( “wp_ajax_nopriv_{$_REQUEST[‘action’]}” )

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   Aurovrata Venet 5 years ago

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   Used to hook an ajax action to server function when a user is not logged into the front-end,

   add_action('wp_ajax_nopriv_front-end-action', 'server_function');
   function server_function(){
   	//validate a nonce, and other $_POST data elements and execute some code.
   	wp_json_send($data); //use wp_json_send to return some data to the client.
   	wp_die(); //use wp_die() once you have completed your execution.
   }

   On the front-end you would have some js script executed based on some event,

   //some event on the page would trigget the following 
   var data = {
     'action' : 'front-end-action',
     //some more data to pass to the server...
   };
   //send the data to the server using the jQuery post method
   //note for the ajaxurl, its best to set it dynamically using the wp_localize_script function, see the link below
    $.post(ajaxurl, data, function(response) {
     //handle the response from the server
   });

   for more info, checkout https://developer.wordpress.org/plugins/javascript/ajax/

   • I think the function wp_json_send($data) should be wp_send_json($data)

     Jonas Lundman 3 years ago