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JavaScript toPrecision() Method
Example
Format a number into a specified length:
var num = new Number(13.3714);
var n=num.toPrecision(2);
var n=num.toPrecision(2);
The result of n will be:
Try it yourself »
Definition and Usage
The toPrecision() method formats a number to a specified length.
A decimal point and nulls are added (if needed), to create the specified length.
Browser Support
The toPrecision() method is supported in all major browsers.
Syntax
number.toPrecision(x)
Parameter Values
| Parameter | Description |
|---|---|
| x | Optional. The number of digits. If omitted, it returns the entire number (without any formatting) |
Return Value
| Type | Description |
|---|---|
| String | The number formatted to the specified precision |
Technical Details
| JavaScript Version: | 1.5 |
|---|
More Examples
Example
Format a number to a specified length:
var num = new Number(13.3714);
var a = num.toPrecision();
var b = num.toPrecision(2);
var c = num.toPrecision(3);
var d = num.toPrecision(10);
var a = num.toPrecision();
var b = num.toPrecision(2);
var c = num.toPrecision(3);
var d = num.toPrecision(10);
The result of a,b,c, and d will be:
Try it yourself »
JavaScript Number Object
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