We first set our input as a number and give it an ID as follows:
Enter your first number: <input type="number" id="numberOne">
Enter your second number: <input type="number" id="numberTwo">

We next get our input results in a function we create and hold the values in a variables like this:
var num1 = document.getElementById('numberOne').value;
var num2 = document.getElementById('numberTwo').value;
var num3 = num1 + num2;
var num4 = parseInt(num1) + parseInt(num2);
var val1 = String.fromCharCode(num1);
var val2 = String.fromCharCode(num2);
remember, the first 32 ASCii chararcters do not display. There are many ways to use and manipulate strings. The ASCii translation of your first number is     and the code to create it is String.fromCharCode(num1); The ASCii translation of your second number is     and the code to create it is String.fromCharCode(num2); Adding the values of our strings together is     and the code to create this is var num3 = num1 + num2; Adding the actual numbers together is     and this code is var num4 = parseInt(num1) + parseInt(num2);