javascript popup 'open' - JQuery Error: cannot call methods on dialog prior to initialization; attempted to call method 'close'

8 Answers

I had a similar problem when opening a dialog with a partial layout in MVC. I was loading the jquery library on the partial page as well as the main page which was causing this error to come up.

function tooltip option

I am suddenly getting this error from jQuery :

Error: cannot call methods on dialog prior to initialization; attempted to call method 'close'


 <script src="//"></script>
 <script src=""></script> 

jQuery code

I am getting those messages in the following function:

$(document).ready(function() {
  if ($('#results').html().length != 0) {
    alert('has information');

      modal: true,
      buttons: {
        Ok: function() {
          // If I use $(this).dialog($(this)).dialog('close'), the UI is displayed,
          // however I do not see the OK button and no errors 
  } else {
    alert('has no data');


<div id="dialog" title="Server Response">
  <p><span class="${icon}" style="float: left; margin: 0 7px 50px 0;"></span>
    <label id="results">${results}</label>

Im also got the same Error: cannot call methods on dialog prior to initialization; attempted to call method 'close'

what i did is i triggered the close button event which is in the dialog header like

this is working fine for me to close the dialog

function btnClose() {

it seems for some reason jQuery UI will try to run all code defined in buttons at definition time. It is crazy but I had the same issue and it stoped once I made this change.

if ($(this).dialog.isOpen === true) { 

I had this problem once before where one dialog box was throwing this error, while all the others were working perfectly. The answer was because I had another element with the same id="dialogBox" else ware on the page. I found this thread during a search, so hopefully this will help someone else.

This happened for me when my ajax was replacing contents on the page and ending up with two elements the same class for the dialog which meant when my line to close the dialog executed based on the CSS class selector, it found two elements not one and the second one had never been initialised.

$(".dialogClass").dialog("close"); //This line was expecting to find one element but found two where the second had not been initialised.

For anyone on ASP.NET MVC this occured because my controller action was returning a full view including the shared layout page which had the element when it should have been returning a partial view since the javascript was replacing only the main content area.

I had a similar problem that I resolved by defining my button array outside of the dialog declaration.

var buttonArray = {};
buttonArray["Ok"] = function() { $( this ).dialog( "close" );}

Your options would become:

modal: true,
autoOpen: false,
buttons: buttonArray

I was getting this error message when trying to close the dialog by using a button inside the dialog body. I tried to use $('#myDialog').dialog('close'); which did not work.

I ended up firing the click action of the 'x' button on the header using:


i have same problem, i open several dialog my problem was what the content should be removed to prevent the form data stay with same data, then the dialog is created these paramters

var dialog = $("#dummy-1");

    dialog.html('<div style="position:absolute; top:15px; left:0px; right:0px; bottom:0px; text-align:center;"><img align="middle" src="cargando.gif"></div>');
        title:'Ventana de Confirmacion',
        resizable: false,
        position: { my: "center center", at: "center center", of: window },
                text: "Eliminar",
                click: function() {
                text: "Cerrar",
                click: function() {
        close: function(event, ui)

and the dialog is passed as a parameter to the function to do action:

    function functionCall(dialogFormulario,var1,var2)
    //same action 


Here it is necessary only to use .dialog("close") and no .dialog("destroy") because the dialog will call its function close: and the element will not exist