wordpress ajax plugin code example

Example 1: wordpress ajax trigger code

echo '<button id="ZapisPrace">Save</button>
<script>
jQuery("#ZapisPrace").click(function($){
    var data={
        action: "addToDB",
        info: "nomz"
    };
    jQuery.post(ajaxurl,data,function(response){
    alert("Response was "+ response);
    });
});
</script>';
add_action('wp_ajax_addToDB','pridajDoDB');
function pridajDoDB(){
    echo '<script>console.log("AAA")</script>';
    wp_die();
}

Example 2: ajax in wordpress

jQuery(document).ready( function() {

   jQuery(".user_vote").click( function(e) {
      e.preventDefault(); 
      post_id = jQuery(this).attr("data-post_id")
      nonce = jQuery(this).attr("data-nonce")

      jQuery.ajax({
         type : "post",
         dataType : "json",
         url : myAjax.ajaxurl,
         data : {action: "my_user_vote", post_id : post_id, nonce: nonce},
         success: function(response) {
            if(response.type == "success") {
               jQuery("#vote_counter").html(response.vote_count)
            }
            else {
               alert("Your vote could not be added")
            }
         }
      })   

   })

})