Calculation of toll per kilogram

Question

Hello, I need to do a toll calculation based on the kilogram. Each 100kg the toll value should be added

Ex:

50kg = 6.42

100kg = 6.42

101kg = 12.84

200kg = 12.84

299kg = 12.84

300kg = 19.26

...

$(document).ready(function () {
    $("#pesoTotaldaNota").focusout(function() {
        peso = "20.000"; // = 20Kg
        echoPedagio = "6.42"        
    }); 
});

I need to show the result on input

<input name="pedagio" type="text" class="form-control" id="pedagio" value="" required>

Another example Até 100kg = 6.42 Até 200kg = 6.42+6.42 Até 200kg = 6.42+6.42+6.42

Answer 1

I set a little example for you:

<input name="pedagio" type="text" class="form-control" id="pedagio" value="" required>
<a id="pesoTotaldaNota">Calcular</a>

In this function it has the weight of 100kg and the value of the Toll of 100kg.

Divide the weight by 100, to see how many 100 fits within 200 Kg, for example. Cabe 2, multiplying by the value of the toll of 100 Kg.

Then he checks if there is any REST left in the division by the %symbol. Then there’s nothing left.

But trade 200 for 101, or 201 and you’ll see the result.

$(document).ready(function () {
    $("#pesoTotaldaNota").click(function() {
        peso = "101";
        var valor = 0;
        var resto = 0;
        echoPedagio = "6.42";
        
        if(peso >= 100){
            valor = (peso / 100) * echoPedagio;
            resto = peso % 100;
            if(resto > 0)
            valor = (echoPedagio * resto) + valor;
        }
        else
            valor = 6.42;
        
        $('#pedagio').val(valor.toFixed(2));
    }); 
});

Answer 2

Alternative:

$(document).ready(function () {
    $("#pedagio").change(function () {
        var peso = parseFloat(this.value);
        var pedagio = 6.42;
        var extra = Math.ceil(peso / 100) * pedagio;
        this.value = peso + extra;
    });
});

jsFiddle: http://jsfiddle.net/3b7b5jzm/

The example is applied to input. What it does is know how many times the weight is greater than 100 and round to multiply by pedagio. This value is then added to the final result as an "extra".