Mozilla Developer Network
- Math
- Methods
- Math.abs()
- Math.acos()
- Math.acosh()
- Math.asin()
- Math.asinh()
- Math.atan()
- Math.atan2()
- Math.atanh()
- Math.cbrt()
- Math.ceil()
- Math.cos()
- Math.cosh()
- Math.exp()
- Math.expm1()
- Math.floor()
- Math.fround()
- Math.hypot()
- Math.imul()
- Math.log()
- Math.log10()
- Math.log1p()
- Math.log2()
- Math.max()
- Math.min()
- Math.pow()
- Math.random()
- Math.round()
- Math.sign()
- Math.sin()
- Math.sinh()
- Math.sqrt()
- Math.tan()
- Math.tanh()
- Math.trunc()
- Properties
Summary
The Math.PI property represents the ratio of the circumference of a circle to its diameter, approximately 3.14159.
Property attributes of Math.PI |
|
|---|---|
| Writable | No |
| Enumerable | No |
| Configurable | No |
Description
Because PI is a static property of Math, you always use it as Math.PI, rather than as a property of a Math object you created.
Examples
Example: Using Math.PI
The following function returns the value of pi:
function getPi() {
return Math.PI
}
Specifications
| Specification | Status | Comment |
|---|---|---|
| ECMAScript 1st Edition. Implemented in JavaScript 1.0 | Standard | Initial definition. |
| ECMAScript Language Specification 5.1th Edition (ECMA-262) | Standard | |
| ECMAScript Language Specification 6th Edition (ECMA-262) | Draft |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
| Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
See also
- The
Mathobject it belongs to.