jQuery UI dialog - check if exists by instance method
Jquery Ui-DialogJquery Ui-Dialog Problem Overview
I'd like to use instance
method for testing if jQuery UI Dialog widget has been initialized or not. Regarding to API, this is possible, but it doesn't work for me:
Uncaught Error: cannot call methods on dialog prior to initialization; attempted to call method 'instance'
demo: http://jsfiddle.net/mDbV7/
UPDATE:
This was a mistake in the documentation, instance
method will be available from version 1.11.0, see this issue.
Jquery Ui-Dialog Solutions
Solution 1 - Jquery Ui-Dialog
The latest version of jQuery UI no longer allows you to call UI methods on items that are not initialized yet. I've just been wrapping them in an if statement, like:
if ($("#divToBeDialoged").hasClass('ui-dialog-content')) {
// do whatever
} else {
// it is not initialized yet
}
Edit: changed class name, thanks @dmnc
Solution 2 - Jquery Ui-Dialog
It is also a good habit to empty and destroy dialogs once you're done using them. I usually use this code in the close event of each dialog
$("#myDialog").dialog({
// other options
close: function(event, ui) {
$(this).empty().dialog('destroy');
}
}
That'd be my advice, rather than asking every time if a dialog exists in an instance make sure that each dialog cleans up after itself.
Solution 3 - Jquery Ui-Dialog
You can use:
if($('#id').is(':ui-dialog')) {
}
or
var obj = $('<div>test</div>').dialog();
if (obj.is(':ui-dialog')) {
alert('I\'m a dialog')
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/themes/smoothness/jquery-ui.css">
<script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/jquery-ui.min.js"></script>
Solution 4 - Jquery Ui-Dialog
If you are making that dialog from an existing id in your html code, like this example:
$('#main').dialog({});
Notice that dialog()
adds the class ui-dialog
in a <div>
parent element generated for it to work. At the #main
element, the classes added by dialog()
are: ui-dialog-content
and ui-widget-content
(in jquery-ui-1.9.2). So, in this case, following the example from @jbabey, you can check the existing dialog doing:
if ($('#main').hasClass('ui-dialog-content')) {
// do whatever
}
Solution 5 - Jquery Ui-Dialog
if ($('#update').is(':data(dialog)'))
{
//#update has dialog
}
else
{
//#update does't have dialog
}
Solution 6 - Jquery Ui-Dialog
For jQuery UI - v1.10.3
if($( "#myDialog" ).is(':data(uiDialog)')){//is(':data(dialog)') does not work
//Dialog exist
}
Solution 7 - Jquery Ui-Dialog
another way is
$('.element').is(':data(dialog)');
Solution 8 - Jquery Ui-Dialog
$("[aria-describedby="IDNAME"]").remove(); - if you want to remove same dialog, which makes as html code
$("[aria-describedby="IDNAME"]") - element of Dialog with additional ID NAME. You can detect data by ($("[aria-describedby="IDNAME"]").lenght > 0) or remove all dialog with this ID for prevent duplicate window.