JavaScript tutorial Simple Addition

In this tutorial we are going to learn JavaScript simple addition through input text box, complete code is given below and code is easy to understand , still if you find any kind of difficulty then please comment, I will try to clear you …

JavaScript Simple Addition Code / Script:


<!DOCTYPE html>
<html lang="en">
<head>
<title>JavaScript Simple Addition</title>
<meta charset="utf-8"/>
<!--
JavaScript Simple Addition
Tutorial by Sanjay Sir ( Codentricks )
-->
</head>
<body>

<input type="text" id="num1" />
<input type="text" id="num2" />
<input type="submit" onclick="sum()" value="Submit" />
<br/>
<div id="result"></div>

<script>
function sum(){
var num1=parseFloat(document.getElementById("num1").value);
var num2=parseFloat(document.getElementById("num2").value);
var sum;
sum=num1+num2;
document.getElementById("result").innerHTML=sum;

}
</script>
</body>
</html>