When the dialog called, a window appears and closes immediately, the question is how to prevent it from closing?

 var date=$('input[type="text"]'); $('form').find('input[type="submit"]').on('click',function (){ if (date.val()==""){ alert('Строка пустая') } else { $( function() { $("#dialog").dialog(); } ); } })
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1 answer 1

You do not interrupt the current submit action.

 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; })