$(document).ready(function(){ var iii = true; // console.log(ddd); // if (ddd) {console.log('hello var ddd is correnct') // }else { // console.log('var ddd is not exist'); // }; console.log($('button')); $('button').click(function(){ var testt = $(this); var id = $(this).attr('id'); var ddd = document.getElementById('test_tr_class'); // $.post( "index.php?r=order%2Fupdate&id=1", function( data ) { if (!ddd) { testt.closest('tr').after( '' + '' + 'data' + '' + '' ); loadShow(testt,id); }else{ document.getElementById('test_tr_class').remove(); }; iii = false; console.log(iii); }); function loadShow(testt,id){ $.post( "/admin/orders/show?id=" + id + '"', function( data ) { $('#content_'+id).html(data); $('#add_mod').submit(function() { $.ajax({ type: "POST", url: "/admin/orders/add?order_id="+id, data: $(this).serialize(), // serializes the form's elements. success: function(data) { loadShow(testt,id); // show response from the php script. } }); return false; }); }); } });