{% extends "admin/change_form.html" %}

{% block admin_change_form_document_ready %}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script>
    $('#id_operations, #id_zp_rate, #id_zp_rate2').on('change', function(e) {
        e.preventDefault()
        zp_rate = $('#id_zp_rate').val()
        operations = $('#id_operations').val()
        zp_rate2 = $('#id_zp_rate2').val()
        res = $('#id_res')
        zp_rate4 = $('#id_zp_rate4')
        zp_rate3 = $('#id_zp_rate3').val()



        function one(){
            if (operations === '-')

                zp_rate4.val(parseFloat(res) - parseFloat(zp_rate))

         }
        function two(){

            if (operations === '%')

                res.val((parseFloat(zp_rate) * parseFloat(zp_rate2)) / 100)


            }

        //zp_rate4.val(parseFloat(res) - parseFloat(zp_rate2))
        one();
        two();

    })



//if dejstvie == plus  plus(perem1, perem 2 );







</script>
{% endblock %}