The toPrecision() function of the Number object accepts a value representing the precision and returns the representation of a (current) number to the specified precision.
Syntax
Its Syntax is as follows
num.toPrecision(num);
Example
<html>
<head>
<title>JavaScript Example</title>
</head>
<body>
<script type="text/javascript">
var num = 3325.462;
result = num.toPrecision(2);
document.write("Result: " + result);
</script>
</body>
</html>Output
Result: 3.3e+3
Example
<html>
<head>
<title>JavaScript Example</title>
</head>
<body>
<script type="text/javascript">
var num = 3325.462;
result = num.toPrecision();
document.write("Result: " + result);
</script>
</body>
</html>Output
Result: 3325.462