I am making a calculator in javascript but I want that the person can add as many number as he wants in the count but I can't put this on js and make it works with more than 3 numbers, in fact, i only works with 3 numbers, if you put less or more than that it does not work :( Could anyone help me ?

Here is the code: 

```js
function add_fields(){
  document.getElementById('linee').innerHTML += '<input type="number" id="nx">';
}

function pluscount(){
  var number1 = n1.value;
  var number2 = n2.value;
  var numberx = nx.value;
  var result = eval(number1) + eval(number2) + eval(numberx);
  visor.value = result;
}
```

```html
<input type="number" id="n1">
<input type="number" id="n2">
<button onclick="add_fields()">+</button>
<div id="linee"></div><br>
<button onclick="pluscount()">Somar</button>
<input type="text" id="visor" disabled >
```

I think I have to use `++` but I can't think the way