Detect if a jQuery UI dialog box is open

Question

I am using a jQuery UI dialog. If it is open, I want to do one thing. If it is closed, I want to do another.

My question is, how do I detect if a jQuery UI dialog b

Answer 1

Actually, you have to explicitly compare it to true. If the dialog doesn't exist yet, it will not return false (as you would expect), it will return a DOM object.

if ($('#mydialog').dialog('isOpen') === true) {
    // true
} else {
    // false
}