//How to get pi:
//Way 1:
Pi = 3.14159;
//Way 2:
Pi = Math.PI;//pi declare pi= MATH.PI
var pi = MATH.PI;
//console
console.log(pi);
//screen
document.write(pi);<html>
<head>
<title>JavaScript Math PI Property</title>
</head>
<body>
<script type = "text/javascript">
var property_value = Math.PI
document.write("Property Value is : " + property_value);
</script>
</body>
</html>