I need to attach a JavaScript onchange event to the receipt dropdown list in a Django project. When the value of the dropdown list is changed a JavaScript function is to be called. How can it be done? The form.py file is given below

from django import forms
receipt_types=(('option1','Option 1'),('option2','Option 2'),('option3','Option 3'),)
class accountsInForm(forms.Form):
    receipt=forms.CharField(max_length=100, widget=forms.Select(choices=reciept_types))