The Number.MAX_VALUE property of the Number object represents the maximum number allowed in JavaScript.
Syntax
Its Syntax is as follows
Number.MAX_VALUE
Example
Live Demo
<html>
<head>
<title>JavaScript Example</title>
</head>
<body>
<script type="text/javascript">
var result = Number.MAX_VALUE;
document.write("Maximum value: " + result);
</script>
</body>
</html>
Output
Maximum value: 1.7976931348623157e+308