JavaScript PIProperty

Math 对象参考手册JavaScript Math Object

Example

Return PI:

Math.PI;

Output:

3.141592653589793

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Definition and Usage

The PI property is π, which is the ratio of a circle's circumference to its diameter. This value is approximately 3.14.

Browser Support

Internet ExplorerFirefoxOperaGoogle ChromeSafari

All major browsers support the PI property.

Syntax

Math.PI

Technical Details

Return value: Returns pi (approximately 3.14159).
JavaScript Version: 1.0

Math 对象参考手册JavaScript Math Object

Other Extensions