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# is-absolute [](https://www.npmjs.com/package/is-absolute) [](https://npmjs.org/package/is-absolute) [](https://travis-ci.org/jonschlinkert/is-absolute)
> Polyfill for node.js `path.isAbolute`. Returns true if a file path is absolute.
## Install
Install with [npm](https://www.npmjs.com/):
```sh
$ npm install --save is-absolute
```
Originally based on the `isAbsolute` utility method in [express](https://github.com/visionmedia/express).
## Usage
```js
var isAbsolute = require('is-absolute');
isAbsolute('a/b/c.js');
//=> 'false'
isAbsolute('/a/b/c.js');
//=> 'true'
```
**Explicitly test windows paths**
```js
isAbsolute.posix('/foo/bar');
isAbsolute.posix('/user/docs/Letter.txt');
//=> true
isAbsolute.posix('foo/bar');
//=> false
```
**Explicitly test windows paths**
```js
var isAbsolute = require('is-absolute');
isAbsolute.win32('c:\\');
isAbsolute.win32('//C://user\\docs\\Letter.txt');
isAbsolute.win32('\\\\unc\\share');
isAbsolute.win32('\\\\unc\\share\\foo');
isAbsolute.win32('\\\\unc\\share\\foo\\');
isAbsolute.win32('\\\\unc\\share\\foo\\bar');
isAbsolute.win32('\\\\unc\\share\\foo\\bar\\');
isAbsolute.win32('\\\\unc\\share\\foo\\bar\\baz');
//=> true
isAbsolute.win32('a:foo/a/b/c/d');
isAbsolute.win32(':\\');
isAbsolute.win32('foo\\bar\\baz');
isAbsolute.win32('foo\\bar\\baz\\');
//=> false
```
## About
### Related projects
* [is-dotfile](https://www.npmjs.com/package/is-dotfile): Return true if a file path is (or has) a dotfile. Returns false if the… [more](https://github.com/jonschlinkert/is-dotfile) | [homepage](https://github.com/jonschlinkert/is-dotfile)
* [is-glob](https://www.npmjs.com/package/is-glob): Returns `true` if the given string looks like a glob pattern or an extglob pattern… [more](https://github.com/jonschlinkert/is-glob) | [homepage](https://github.com/jonschlinkert/is-glob)
* [is-relative](https://www.npmjs.com/package/is-relative): Returns `true` if the path appears to be relative. | [homepage](https://github.com/jonschlinkert/is-relative)
* [is-unc-path](https://www.npmjs.com/package/is-unc-path): Returns true if a filepath is a windows UNC file path. | [homepage](https://github.com/jonschlinkert/is-unc-path)
* [is-valid-glob](https://www.npmjs.com/package/is-valid-glob): Return true if a value is a valid glob pattern or patterns. | [homepage](https://github.com/jonschlinkert/is-valid-glob)
### Contributing
Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new).
### Contributors
| **Commits** | **Contributor**<br/> |
| --- | --- |
| 31 | [jonschlinkert](https://github.com/jonschlinkert) |
| 1 | [es128](https://github.com/es128) |
| 1 | [shinnn](https://github.com/shinnn) |
### Building docs
_(This document was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme) (a [verb](https://github.com/verbose/verb) generator), please don't edit the readme directly. Any changes to the readme must be made in [.verb.md](.verb.md).)_
To generate the readme and API documentation with [verb](https://github.com/verbose/verb):
```sh
$ npm install -g verb verb-generate-readme && verb
```
### Running tests
Install dev dependencies:
```sh
$ npm install -d && npm test
```
### Author
**Jon Schlinkert**
* [github/jonschlinkert](https://github.com/jonschlinkert)
* [twitter/jonschlinkert](http://twitter.com/jonschlinkert)
### License
Copyright © 2016, [Jon Schlinkert](https://github.com/jonschlinkert).
Released under the [MIT license](https://github.com/jonschlinkert/is-absolute/blob/master/LICENSE).
***
_This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.1.31, on October 16, 2016._
|
