How to alert using jQuery

Question

This works:

$(\'.overdue\').addClass(\'alert\');

But this doesn\'t:

$(\'.overdue\').alert(\'Your book is overdue.\'); 
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Answer 1

For each works with JQuery as in

$().each(function() {
   //this points to item
   alert('');
});

JQuery also, for a popup, has in the UI library a dialog widget: http://jqueryui.com/demos/dialog/

Check it out, works really well.

HTH.