I'm looking for a easy to use jQuery form validation plugin, which give validation error as a "Alert". Because alert is the best way to inform screen reader users about errors.

I'm looking for a easy to use jQuery form validation plugin, which give validation error as a "Alert". Because alert is the best way to inform screen reader users about errors.

You can modify the jQuery validation plugin.
$('form').validate({
errorPlacement: function(error, element) {
alert(error.text());
}
});
alert() may be useful for screen readers (citation?) but they are frustrating for everyone else. Anyone else agree?
Most of the validations plugins write out a summary of the issues onto the page. You could do a simple code change in the plugin to just do an alert() versus jquery writing it using .html()
Shouldn't be too painful of a mod, and something small to have some fun modifying a plugin.