my-ua-parser

my-ua-parser

JavaScript library to detect Browser, Engine, OS, CPU, and Device type/model from User-Agent data with relatively small footprint (~17KB minified, ~6KB gzipped) that can be used in node.js (server-side).

Documentation

UAParser([user-agent][,extensions])

typeof user-agent "string".

typeof extensions "array".

In The Browser environment you don't need to pass the user-agent string to the function, you can just call the function and it should automatically get the string from the window.navigator.userAgent, but that is not the case in nodejs. The user-agent string must be passed in nodejs for the function to work. Usually you can find the user agent in: request.headers["user-agent"].

Constructor

When you call UAParser with the new keyword UAParser will return a new instance with an empty result object, you have to call one of the available methods to get the information from the user-agent string. Like so:

• new UAParser([uastring][,extensions])

let parser = new UAParser("user-agent"); // you need to pass the user-agent for nodejs
console.log(parser); // {}
let parserResults = parser.getResult();
console.log(parserResults);
/** {
  "ua": "",
  "browser": {},
  "engine": {},
  "os": {},
  "device": {},
  "cpu": {}
} */

When you call UAParser without the new keyword, it will automatically call getResult() function and return the parsed results.

• UAParser([uastring][,extensions])
  • returns result object { ua: '', browser: {}, cpu: {}, device: {}, engine: {}, os: {} }

Methods

Methods table

The methods are self-explanatory, here's a small overview on all the available methods:

• getResult() - returns all function object calls, user-agent string, browser info, cpu, device, engine, os: { ua: '', browser: {}, cpu: {}, device: {}, engine: {}, os: {} }.

• getBrowser() - returns the browser name and version.

• getDevice() - returns the device model, type, vendor.

• getEngine() - returns the current browser engine name and version.

• getOS() - returns the running operating system name and version.

• getCPU() - returns CPU architectural design name.

• getUA() - returns the user-agent string.

• setUA(user-agent) - set a custom user-agent to be parsed.

---

• getResult()

  • returns { ua: '', browser: {}, cpu: {}, device: {}, engine: {}, os: {} }

• getBrowser()

  • returns { name: '', version: '' }

…

• getDevice()
  • returns { model: '', type: '', vendor: '' }

…

• getEngine()
  • returns { name: '', version: '' }

# Possible 'engine.name'
Amaya, Blink, EdgeHTML, Flow, Gecko, Goanna, iCab, KHTML, LibWeb, Links, Lynx, 
NetFront, NetSurf, Presto, Tasman, Trident, w3m, WebKit

# 'engine.version' determined dynamically

• getOS()
  • returns { name: '', version: '' }

…

• getCPU()
  • returns { architecture: '' }

# Possible 'cpu.architecture'
68k, amd64, arm[64/hf], avr, ia[32/64], irix[64], mips[64], pa-risc, ppc, 
sparc[64]

• getUA()

  • returns UA string of current instance

• setUA(uastring)

  • set UA string to be parsed
  • returns current instance

Usage

Using HTML

Using node.js

Note: Device information is not available in the NodeJS environment.

$ npm install my-ua-parser

var http = require('http');
var parser = require('my-ua-parser');

http.createServer(function (req, res) {
    // get user-agent header
    var ua = parser(req.headers['user-agent']);
    // write the result as response
    res.end(JSON.stringify(ua, null, '  '));
})
.listen(1337, '127.0.0.1');

console.log('Server running at http://127.0.0.1:1337/');

Using jQuery/Zepto ($.ua)

Although written in vanilla js, this library will automatically detect if jQuery/Zepto is present and create $.ua object (with values based on its User-Agent) along with window.UAParser constructor. To get/set user-agent you can use: $.ua.get() / $.ua.set(uastring).

…

Using Extension

• UAParser([uastring,] extensions)

// Example:
var myOwnListOfBrowsers = [
    [/(mybrowser)\/([\w\.]+)/i], [UAParser.BROWSER.NAME, UAParser.BROWSER.VERSION]
];
var myParser = new UAParser({ browser: myOwnListOfBrowsers });
var myUA = 'Mozilla/5.0 MyBrowser/1.3';
console.log(myParser.setUA(myUA).getBrowser());  // {name: "MyBrowser", version: "1.3"}

How To Contribute

• Fork and clone this repository
• Make some changes as required
• Write unit test to showcase its functionality
• Run the test suites to make sure it's not breaking anything $ npm test

Credits

This library is a fork of ua-parser-js by Faisal Salman. The original library switched to a AGPL+commercial license, so this fork was created to keep the library under the MIT license.

This fork was done at commit.

License

MIT License

Copyright (c) 2024 Matteo Collina > Copyright (c) 2012-2023 Faisal Salman >

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.