Dialog closes immediately

[rosemadder]

On call. dialog There's a window and closes, and the question is, how do you not close?

var date=$('input[type="text"]');
$('form').find('input[type="submit"]').on('click',function (){
if (date.val()==""){
    alert('Строка пустая')
}
else {
     $( function() {
            $("#dialog").dialog();

    } );

}

})

[chanisef]

You're not interrupting your current operation.

var date=$('input[type="text"]');
$('form').find('input[type="submit"]').on('click',function (){
if (date.val()==""){
    alert('Строка пустая')
}
else {
     $( function() {
            $("#dialog").dialog();

    } );

}
return false;

})