<html>
<body>
<p id="demo">Click the button to the absolute value of different numbers</p>
<button onclick="myFunction()">Try it</button>
<script>
function myFunction()
{
var a=Math.abs(7.25);
var b=Math.abs(-7.25);
var c=Math.abs(null);
var d=Math.abs("Hello");
var e=Math.abs(2+3);
var x=document.getElementById("demo");
x.innerHTML=a + "<br>" + b + "<br>" + c + "<br>" + d + "<br>" + e;
}
</script>
</body>
</html>