jQuery(document).ready( function($) { $("#btngoogle").click( function() { var dt = $('#google_head_tag_verification_item').val(); var data = { action: 'test_response', post_var: dt }; // the_ajax_script.ajaxurl is a variable that will contain the url to the ajax processing file $.post(the_ajax_script.ajaxurl, data, function(response) { alert(response); }); return false; }); });