This is a Euler's constant and the base of natural logarithms, approximately 2.718.
Syntax:
Math.E
Example:
<html>
<head>
<title>JavaScript Math E Property</title>
</head>
<body>
<script type="text/javascript">
var property_value = Math.E
document.write("Property Value is : " + property_value);
</script>
</body>
</html>