jQuery change event being called twice

e.stopImmediatePropagation(); is what worked for me.

$(document).ready(function() {
    $(".myClass").change(function(e) {
        e.stopImmediatePropagation();
        alert('bla');
    })
});

Its a bug, You'd add

$("#some_id").unbind('change');

before any change call

All I can think of is that you used the same class on the form itself. if so, remove the myClass style from your form tag.

Corrected : http://jsfiddle.net/rY6Gq/1/

Faulty one with double alert: http://jsfiddle.net/rY6Gq/

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