# Creating a function that calculates the volume of a cuboid

We have learned how to create a function that have arguments. In this example, we shall show you how to create a function that calculated the volume of cuboid give the width, length and height of the cuboid.

The JavaScript function to calculate the volume is

function Calvol(width, length, height){
var vol=width*length*height;
return vol;
}

The JavaScript function to call the Calvol() function by replacing the parameters with the arguments generate by the HTML document is

function CalSize(){
var x=parseInt(document.getElementById(“wdt”).innerHTML);
var y=parseInt(document.getElementById(“lgt”).innerHTML);
var z=parseInt(document.getElementById(“hgt”).innerHTML);
var Size=Calvol(x,y,z);
document.getElementById(‘ans’).textContent=”The Volume is= “+Size;
}

The HTML document is

<!DOCTYPE html>
<html>
<meta http-equiv=”Content-Type” content=”text/html; charset=windows-1252″>
<title>Volume Calculation</title>
<h1>Volume Calculation</h1>
<p>Width=<b id=”wdt”></b></p>
<p>Length=<b id=”lgt”></b></p>
<p>Height=<b id=”hgt”></b></p>
<P id=”ans”>What is the Volume?</p>
<input type=”button” value=”Calculate Volume” onclick=”CalSize()”><br><br>
<input type=”button” value=”Next Question” onclick=” location.reload();”>
<script>
function RandomFn() {
document.getElementById(“wdt”).innerHTML = parseInt(Math.random()*9+1);
document.getElementById(“lgt”).innerHTML = parseInt(Math.random()*9+1);
document.getElementById(“hgt”).innerHTML = parseInt(Math.random()*9+1);
}
</script>
<script type=”text/javascript” src=”volume.js”></script>

</body>
</html>