Outdated Browser Rework

Detects outdated browsers and advises users to upgrade to a new version. Handles mobile devices!

This is a fork of Burocratik's Outdated Browser, adding a number of new features including:

Explicit browser version support
Mobile browser support
Edge support
Substantial size reduction
More translations
Custom upgrade messages
Unminified code

And more (see below for the full list).

One of the challenges with making this type of module is that the JS and CSS can't use any current tech - the 'get a new browser' message must display on older browsers - so yes, this is hard. We can't even use the nice '×' close character (we have to use the letter 'x') since that character doesn't display on some older browsers! This module is tested all the way back to IE6.

This module does not need jQuery.

Demo

Outdated Browser Rework was created by, for, and is used in production at, EV HTTPS provider CertSimple. You can see it working there.

If you want to force your browser to be unsupported, you can also check out a demo where all browsers are unsupported.

Usage (with browserify)

JS

In your template

In <head>, before any other script tags:

<script src="/js/dist/oldbrowser.js"></script>

In `oldbrowser.js`

Start outdated-browser-rework and call it with your preferred options:

var outdatedBrowserRework = require("outdated-browser-rework");
outdatedBrowserRework();

If you like, specify options, eg:

outdatedBrowserRework({
	browserSupport: {
		'Chrome': 57, // Includes Chrome for mobile devices
		'Edge': 39,
		'Safari': 10,
		'Mobile Safari': 10,
		'Firefox': 50,
		'Opera': 50,
		// You could specify a version here if you still support IE in 2017.
		// You could also instead seriously consider what you're doing with your time and budget
		'IE': false
	},
	requireChromeOnAndroid: false,
	isUnknownBrowserOK: false, 
	messages: {
		en: {
			outOfDate: "Your browser is out of date!",
			update: {
				web: "Update your browser to view this website correctly. ",
				googlePlay: "Please install Chrome from Google Play",
				appStore: "Please update iOS from the Settings App"
			},
			url: "http://outdatedbrowser.com/",
			callToAction: "Update my browser now",
			close: "Close"
		}
	}
})

The particular versions used in this example are the defaults, by the way!

See below for more options.

Browsers that are older than the versions supplied, or who use a browser where support is false, will see a message, depending on their platform:

On desktop browsers, users will be directed to outdatedbrowser.com
on iOS devices, users will be asked to visit the Settings app and upgrade their OS.
On Android devices, users will be directed to Chrome in Google Play.

Usage (without browserify)

In your template

In <head>, before any other script tags:

	<script src="/js/dist/outdated-browser-rework.min.js"></script>
	<script>
			outdatedBrowserRework();
	</script>

See above for the default options.

Options

browserSupport: Object - A matrix of browsers and their major versions - see above for demo. Anything less will be unsupported. false means all versions are unsupported.
requiredCssProperty: String - A CSS property that must be supported.
messages: Object - Customize upgrade messages for your purposes. See the above default options for an example.
language: String - A language string to be used for the messages in the notification. Default is en. See languages.json for supported languages. Can be used instead of messages if preferred.
requireChromeOnAndroid: Boolean - Ask Android users to install Chrome. Default is false.
isUnknownBrowserOK: Boolean. Whether unknown browsers are considered to be out of date or not. The default is false, ie. unknown browsers are considered to be out of date. Consider setting true and using requiredCssProperty to catch missing features.

SCSS

If you're using sass-npm you can just import the npm module, and it will load index.scss:

@import "outdated-browser-rework.scss";

Otherwise compile the sass and put it somewhere. Then load that via a link tag inside <head>:

<link rel="stylesheet" href="/css/outdated-browser.css">

HTML

Add the required HTML at the end of your document:

		<div id="outdated"></div>

Yes, IDs suck but old browsers don't support gettting elements by class name.

Bunding the JavaScript

In modern times we normally concatenate and combine different JS modules using browserify or webpack: it's best to bundle outdated-browser-rework by itself. Since other scripts may expect things like console and function.bind() to exist, they won't work on old browsers - if you bundle this with other software, the JS will probably fail before outdated-browser has a chance to do any work.

For gulp users

Add the following underneath your existing js task:

gulp
	.src('./public/js/src/oldbrowser.js')
	.pipe(browserify({
			debug : ! gulp.env.production
	}))
	.pipe(gulp.dest('./public/js/dist'))

Doing this will mean that dist/oldbrowser.js will only include outdated-browser-rework and its dependency user-agent-parser, without anything else to get in the way.

For Webpack users

Someone using Webpack please provide Webpack instructions!