A useful but often overrated JavaScript function is the browser detect. Sometimes you want to give specific instructions or load a new page in case the viewer uses, for instance, Safari.
If you're new to JavaScript, don't use browser detects. You don’t need them. Please read the object detection page first.
Use WhichBrowser
This page used to contain my own browser detect script, but I found that I do not have enough time to keep it up to date. Therefore I removed it.
I advise you to use WhichBrowser. It’s up-to-date, and contains a treasure trove of mobile information.
If you use my old script I advise you to switch to WhichBrowser.
navigator
Below you see the objects contained by the object navigator. These variables can be read out and give information about the browser and computer of your users.
navigator.geolocation = [object Geolocation]
navigator.webkitPersistentStorage = [object StorageQuota]
navigator.webkitTemporaryStorage = [object StorageQuota]
navigator.doNotTrack = null
navigator.onLine = true
navigator.product = Gecko
navigator.appCodeName = Mozilla
navigator.userAgent = Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.146 Safari/537.36
navigator.platform = MacIntel
navigator.appVersion = 5.0 (Macintosh; Intel Mac OS X 10_9_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.146 Safari/537.36
navigator.appName = Netscape
navigator.vendorSub =
navigator.vendor = Google Inc.
navigator.productSub = 20030107
navigator.cookieEnabled = true
navigator.mimeTypes = [object MimeTypeArray]
navigator.plugins = [object PluginArray]
navigator.language = en-US
navigator.javaEnabled = function javaEnabled() { [native code] }
navigator.getStorageUpdates = function getStorageUpdates() { [native code] }
navigator.registerProtocolHandler = function registerProtocolHandler() { [native code] }
navigator.webkitGetGamepads = function webkitGetGamepads() { [native code] }
navigator.webkitGetUserMedia = function webkitGetUserMedia() { [native code] }
navigator.vibrate = function vibrate() { [native code] }