javascript - How to trigger a popup message on click the close button of a jqueryui window? -

i want trigger message on click on close button of jqueryui window.

see jqueryui window here. want give confirmation message on click close button.

any idea?

attach event listener on beforeclose event:

$("#dialog").on("dialogbeforeclose", function(event, ui) {     // stuff, presumably return false prevent closing dialog });

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