sorry, didn't fully read your question.
the only difference between onblur and onchange is that onblur fires
every time you move away from the text field, whereas onchange (on a
textfield) fires when you move away from the text field (just like
blur) but only when the value of the field is changed, ie, it won't
fire if you move away and the value stayed the same.
so yes, blur will behave just like change for a text field.