The toPrecision method in JavaScript provides a string representation of a number with a defined level of precision.
Syntax
The syntax for the toPrecision method is illustrated as follows:
Example
Number.toPrecision(digits)
Parameter
digits - This parameter is not mandatory. It specifies the number of decimal places to which the number should be accurate.
Return
A string that signifies a numerical value with a precise count of digits following the decimal separator.
JavaScript Number toPrecision method example
In this section, we will explore the toPrecision method by examining multiple examples.
Example 1
Let’s examine a straightforward illustration of the toPrecision function.
Example
<script>
var a=98.9721;
document.writeln(a.toPrecision());
</script>
Output:
Example 2
Let’s examine an example that demonstrates how to round a number to a specified number of decimal places.
Example
<script>
var a=98.9721;
document.writeln(a.toPrecision(2));
</script>
Output:
