## Bowser
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A Browser detector. Because sometimes, there is no other way, and not even good modern browsers always provide good feature detection mechanisms.
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[](https://travis-ci.org/lancedikson/bowser)
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So... it works like this:
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``` js
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if (bowser.msie && bowser.version <= 6) {
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alert('Hello China');
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}
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```
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## 1.1.0 breaking changes
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We don't save built script in the repo anymore. The main file (`src/bowser.js`) is available through NPM or Bower.
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Also you can download minified file from [the release page](https://github.com/ded/bowser/releases).
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## 1.0.0 breaking changes
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`browser = require('bowser').browser;` becomes `bowser = require('bowser');`
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---
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## API
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### bowser`:Object`
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Use it to get object with detected flags of your current browser.
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### bowser._detect(ua `:String`)`:Object`
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Use it to get object with detected flags from User Agent string.
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### bowser.check(minVersions`:Object`, strictMode`:Boolean`, [ua]`:String`)`:Boolean`
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Use it to check if browser is supported. In default non-strict mode any browser family not present in `minVersions` will pass the check (like Chrome in the third call in the sample bellow). When strict mode is enabled then any not specified browser family in `minVersions` will cause `check` to return `false` (in the sample it is the fourth call, the last one).
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``` js
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/**
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* in case of using IE10
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*/
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bowser.check({msie: "11"}); // true
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bowser.check({msie: "9.0"}); // false
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/**
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* specific user agent
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*/
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bowser.check({chrome: "45"}, window.navigator.userAgent); // true
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/**
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* but false in strict mode
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*/
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bowser.check({chrome: "45"}, true, window.navigator.userAgent); // false
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```
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### bowser.compareVersions(versions`:Array<String>`)`:Number`
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Use it to compare two versions.
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``` js
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bowser.compareVersions(['9.0', '10']);
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// -1
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```
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### bowser.isUnsupportedBrowser(minVersions`:Object`, [strictMode]`:Boolean`, [ua]`:string`)`:Boolean`
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Use it to check if browser is unsupported.
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``` js
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bowser.isUnsupportedBrowser({msie: "10"}, window.navigator.userAgent);
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// true / false
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```
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See more examples in [tests](test/test.js).
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---
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## Bowser Flags
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Your mileage may vary, but these flags should be set. See Contributing below.
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``` js
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alert('Hello ' + bowser.name + ' ' + bowser.version);
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```
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### All detected browsers
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These flags are set for all detected browsers:
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* `name` - A human readable name for this browser. E.g. 'Chrome', ''
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* `version` - Version number for the browser. E.g. '32.0'
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For unknown browsers, Bowser makes a best guess from the UA string. So, these may not be set.
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### Rendering engine flags
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If detected, one of these flags may be set to true:
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* `webkit` - Chrome 0-27, Android <4.4, iOs, BB, etc.
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* `blink` - Chrome >=28, Android >=4.4, Opera, etc.
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* `gecko` - Firefox, etc.
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* `msie` - IE <= 11
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* `msedge` - IE > 11
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Safari, Chrome and some other minor browsers will report that they have `webkit` engines.
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Firefox and Seamonkey will report that they have `gecko` engines.
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``` js
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if (bowser.webkit) {
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// do stuff with safari & chrome & opera & android & blackberry & webos & silk
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}
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```
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### Device flags
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If detected, one of these flags may be set to true:
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* `mobile` - All detected mobile OSes are additionally flagged `mobile`, **unless it's a tablet**
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* `tablet` - If a tablet device is detected, the flag `tablet` is **set instead of `mobile`**.
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### Browser flags
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If detected, one of these flags may be set to true. The rendering engine flag is shown in []'s:
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* `chrome` - [`webkit`|`blink`]
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* `chromium` - [`webkit`|`blink`]
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* `firefox` - [`gecko`]
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* `msie`
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* `msedge`
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* `safari` - [`webkit`]
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* `android` - native browser - [`webkit`|`blink`]
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* `ios` - native browser - [`webkit`]
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* `opera` - [`blink` if >=15]
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* `samsungBrowser` - [`blink`]
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* `phantom` - [`webkit`]
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* `blackberry` - native browser - [`webkit`]
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* `webos` - native browser - [`webkit`]
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* `silk` - Amazon Kindle browser - [`webkit`]
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* `bada` - [`webkit`]
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* `tizen` - [`webkit`]
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* `seamonkey` - [`gecko`]
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* `sailfish` - [`gecko`]
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* `ucbrowser` — [`webkit`]
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* `qupzilla` — [`webkit`]
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* `vivaldi` — [`blink`]
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* `sleipnir` — [`blink`]
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* `kMeleon` — [`gecko`]
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* `whale` — [`blink`]
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For all detected browsers the browser version is set in the `version` field.
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### OS Flags
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If detected, one of these flags may be set to true:
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* `mac`
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* `windows` - other than Windows Phone
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* `windowsphone`
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* `linux` - other than `android`, `chromeos`, `webos`, `tizen`, and `sailfish`
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* `chromeos`
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* `android`
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* `ios` - also sets one of `iphone`/`ipad`/`ipod`
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* `blackberry`
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* `firefoxos`
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* `webos` - may also set `touchpad`
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* `bada`
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* `tizen`
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* `sailfish`
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`osname` and `osversion` may also be set:
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* `osname` - for the OS flags detected above: macOS, Windows, Windows Phone, Linux, Chrome OS, Android, iOS, Blackberry OS, Firefox OS, WebOS, Bada, Tizen, Sailfish OS, and Xbox
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* `osversion` - for Android, iOS, MacOS, Windows, Windows Phone, WebOS, Bada, and Tizen. If included in UA string.
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iOS is always reported as `ios` and additionally as `iphone`/`ipad`/`ipod`, whichever one matches best.
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If WebOS device is an HP TouchPad the flag `touchpad` is additionally set.
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### Browser capability grading
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One of these flags may be set:
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* `a` - This browser has full capabilities
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* `c` - This browser has degraded capabilities. Serve simpler version
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* `x` - This browser has minimal capabilities and is probably not well detected.
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There is no `b`. For unknown browsers, none of these flags may be set.
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### Ender Support
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`package.json`
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``` json
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"dependencies": {
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"bowser": "x.x.x"
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}
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```
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``` js
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if (require('bowser').chrome) {
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alert('Hello Silicon Valley')
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}
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```
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### Contributing
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If you'd like to contribute a change to bowser, modify the files in `src/`, then run the following (you'll need node + npm installed):
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``` sh
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$ npm install
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$ make test
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```
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Please do not check-in the built files `bowser.js` and `bowser.min.js` in pull requests.
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### Adding tests
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See the list in `src/useragents.js` with example user agents and their expected bowser object.
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Whenever you add support for new browsers or notice a bug / mismatch, please update the list and
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check if all tests are still passing.
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### Similar Projects
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* [Kong](https://github.com/BigBadBleuCheese/Kong) - A C# port of Bowser.
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### License
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Licensed as MIT. All rights not explicitly granted in the MIT license are reserved. See the included LICENSE file for more details.
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