How to pass a variable from javascript into url through href: django

I have seen various post allowing user to do this by including the var as part of the url something like this http://127.0.0.1:8000/?var1="var1"+var2="var2"

But in my case I need to send the variable into href tag which goes to views function in my django app <a href="{% url 'process-payment'> I have the variable set like this:

<td><strong>Rs.<span id="totalPrice">{{ order.get_cart_total}}</span></strong></td>
.
.
<a href="{% url 'process-payment'> 
.
<script>
    var totalPrice = document.getElementById("totalPrice").innerHTML;   //picking a value through innerHTML
</script> 

Can anyone help me build this url so the value goes to views function

urls.py

urlpatterns=[
path('payment/',views.process_payment, name='process-payment'),
]