[jquery] How to remove close button on the jQuery UI dialog?

How do I remove the close button (the X in the top-right corner) on a dialog box created by jQuery UI?

$("#div2").dialog({
   closeOnEscape: false,
   open: function(event, ui) { $('#div2').parent().find('a.ui-dialog-titlebar-close').hide();}
});

document.querySelector('.ui-dialog-titlebar-close').style.display = 'none'

the "best" answer will not be good for multiple dialogs. here is a better solution.

open: function(event, ui) { 
    //hide close button.
    $(this).parent().children().children('.ui-dialog-titlebar-close').hide();
},

You can remove the close button with the code below. There are other options as well which you might fight useful.

$('#dialog-modal').dialog({
    //To hide the Close 'X' button
    "closeX": false,
    //To disable closing the pop up on escape
    "closeOnEscape": false,
    //To allow background scrolling
    "allowScrolling": true
    })
//To remove the whole title bar
.siblings('.ui-dialog-titlebar').remove();

You can also remove your header line:

<div data-role="header">...</div>

which removes the close button.

http://jsfiddle.net/marcosfromero/aWyNn/

$('#yourdiv').                 // Get your box ...
  dialog().                    // ... and turn it into dialog (autoOpen: false also works)
  prev('.ui-dialog-titlebar'). // Get title bar,...
  find('a').                   // ... then get the X close button ...
  hide();                      // ... and hide it

For the deactivating the class, the short code:

$(".ui-dialog-titlebar-close").hide();

may be used.

Here is another option just using CSS that does not over ride every dialog on the page.

The CSS

.no-close .ui-dialog-titlebar-close {display: none }

The HTML

<div class="selector" title="No close button">
    This is a test without a close button
</div>

The Javascript.

$( ".selector" ).dialog({ dialogClass: 'no-close' });

Working Example

This is for jQuery UI 1.12. I added the following configuration setting for 'classes' option

        classes: {
            'ui-dialog-titlebar-close': 'hidden',
        },

the whole dialog initialization looks like this:

ConfirmarSiNo(titulo, texto, idPadre, fnCerrar) {
    const DATA_RETORNO = 'retval';
    $('confirmar-si-no').dialog({
        title: titulo,
        modal: true,
        classes: {
            'ui-dialog-titlebar-close': 'hidden',
        },
        appendTo: `#${idPadre}`,
        open: function fnOpen() { $(this).text(texto); },
        close: function fnClose() {
            let eligioSi = $(this).data(DATA_RETORNO) == true;
            setTimeout(function () { fnCerrar(eligioSi); }, 30);
        },
        buttons: {
            'Si, por favor': function si() { $(this).data(DATA_RETORNO, true); $(this).dialog("close"); },
            'No, gracias': function no() { $(this).data(DATA_RETORNO, false); $(this).dialog("close"); }
        }
    });
}

I use following script call to show it:

ConfirmarSiNo('Titulo',
              '¿Desea actualizar?',
              idModalPadre,
              (eligioSi) => {
                            if (eligioSi) {
                                this.$tarifa.val(tarifa.tarifa);
                                this.__ActualizarTarifa(tarifa);
                            }
                        });

whithin Html body I have the following div that contains the dialog:

<div class="modal" id="confirmar-si-no" title="" aria-labelledby="confirmacion-label">
    mensaje
</div>

final result is:

function 'ConfirmarSiNo' is based on 'Whome' answer on post How to implement “confirmation” dialog in Jquery UI dialog?

$(".ui-button-icon-only").hide();

Since I found I was doing this in several places in my app, I wrapped it in a plugin:

(function ($) {
   $.fn.dialogNoClose = function () {
      return this.each(function () {
         // hide the close button and prevent ESC key from closing
         $(this).closest(".ui-dialog").find(".ui-dialog-titlebar-close").hide();
         $(this).dialog("option", "closeOnEscape", false);
      });
   };
})(jQuery)

Usage Example:

$("#dialog").dialog({ /* lots of options */ }).dialogNoClose();

Once you have called .dialog() on an element, you can locate the close button (and other dialog markup) at any convenient time without using event handlers:

$("#div2").dialog({                    // call .dialog method to create the dialog markup
    autoOpen: false
});
$("#div2").dialog("widget")            // get the dialog widget element
    .find(".ui-dialog-titlebar-close") // find the close button for this dialog
    .hide();                           // hide it

Alternate method:

Inside dialog event handlers, this refers to the element being "dialogged" and $(this).parent() refers to the dialog markup container, so:

$("#div3").dialog({
    open: function() {                         // open event handler
        $(this)                                // the element being dialogged
            .parent()                          // get the dialog widget element
            .find(".ui-dialog-titlebar-close") // find the close button for this dialog
            .hide();                           // hide it
    }
});

FYI, dialog markup looks like this:

<div class="ui-dialog ui-widget ui-widget-content ui-corner-all ui-draggable ui-resizable">
    <!-- ^--- this is the dialog widget -->
    <div class="ui-dialog-titlebar ui-widget-header ui-corner-all ui-helper-clearfix">
        <span class="ui-dialog-title" id="ui-dialog-title-dialog">Dialog title</span>
        <a class="ui-dialog-titlebar-close ui-corner-all" href="#"><span class="ui-icon ui-icon-closethick">close</span></a>
    </div>
    <div id="div2" style="height: 200px; min-height: 200px; width: auto;" class="ui-dialog-content ui-widget-content">
        <!-- ^--- this is the element upon which .dialog() was called -->
    </div>
</div>

Demos here

I catch the close event of the dialog box. This code then removes the <div> (#dhx_combo_list):

open: function(event, ui) { 
  //hide close button.
  $(this).parent().children().children('.ui-dialog-titlebar-close').click(function(){
    $("#dhx_combo_list").remove();
  });
},

As shown on the official page and suggested by David:

Create a style:

.no-close .ui-dialog-titlebar-close {
    display: none;
}

Then, you can simply add the no-close class to any dialog in order to hide it's close button:

$( "#dialog" ).dialog({
    dialogClass: "no-close",
    buttons: [{
        text: "OK",
        click: function() {
            $( this ).dialog( "close" );
        }
    }]
});

I am a fan of one-liners (where they work!). Here is what works for me:

$("#dialog").siblings(".ui-dialog-titlebar").find(".ui-dialog-titlebar-close").hide();

You can use CSS to hide the close button instead of JavaScript:

.ui-dialog-titlebar-close{
    display: none;
}

If you don't want to affect all the modals, you could use a rule like

.hide-close-btn .ui-dialog-titlebar-close{
    display: none;
}

And apply .hide-close-btn to the top node of the dialog

Robert MacLean's answer did not work for me.

This however does work for me:

$("#div").dialog({
   open: function() { $(".ui-dialog-titlebar-close").hide(); }
});

The close button added by the Dialog widget has the class 'ui-dialog-titlebar-close', so after your initial call to .dialog(), you can use a statement like this to remove the close button again: It works..

$( 'a.ui-dialog-titlebar-close' ).remove();

How about using this pure CSS line? I find this the cleanest solution for a dialog with given Id:

.ui-dialog[aria-describedby="IdValueOfDialog"] .ui-dialog-titlebar-close { display: none; }

Easy way to achieve: (Do this in your Javascript)

$("selector").dialog({
    autoOpen: false,
    open: function(event, ui) {   // It'll hide Close button
        $(".ui-dialog-titlebar-close", ui.dialog | ui).hide();
    },
    closeOnEscape: false,        // Do not close dialog on press Esc button
    show: {
        effect: "clip",
        duration: 500
    },
    hide: {
        effect: "blind",
        duration: 200
    },
    ....
});

None of the above works. The solution that really works is:

$(function(){
  //this is your dialog:
  $('#mydiv').dialog({
    // Step 1. Add an extra class to our dialog to address the dialog directly. Make sure that this class is not used anywhere else:
    dialogClass: 'my-extra-class' 
  })
  // Step 2. Hide the close 'X' button on the dialog that you marked with your extra class
  $('.my-extra-class').find('.ui-dialog-titlebar-close').css('display','none');
  // Step 3. Enjoy your dialog without the 'X' link
})

Please check if it works for you.

The best way to hide the button is to filter it with it's data-icon attribute:

$('#dialog-id [data-icon="delete"]').hide();

I think this is better.

open: function(event, ui) {
  $(this).closest('.ui-dialog').find('.ui-dialog-titlebar-close').hide();
}