jquery - How to include check -

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i have function checks particular event , when detects displays overlay message. until happens need have beforeunload in place warn user potential data loss in case decide leave page before task complete. added in following manner, when task complete , beforeunload should not fire still gets triggered. think due bind. there way can implemented achieve trying accomplish?

if (!$("#area").find('.item').length) {      $("#message").dialog({         modal: true     });  } else {     $(window).bind("beforeunload", function() {         return "are sure?";     });  }

you need call unbind("beforeunload") remove handler.


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