From: http://news.mydrivers.com/1/159/159621.htm
The development team of Microsoft IE browser introduced the new ie9 style through the official blog todayUser-Agent string (user agent string), Website developers and designers should pay attention to
Summary of IE6-IE9 compatibility problem list and Solution
Please help me to see if there are any other items not included. Let's brainstorm and add, thank you!
IE6-IE9 compatibility problem list and Solution
The directory
Defined
User Agent string: navigator.useragent
The HTTP specification specifies that the browser should send a short user agent string indicating the name and version number of the browser. But in reality it is not so simple.
Development history
The user agent string userAgent can implement four identification functions: String useragent
Definition
User proxy string: navigator. userAgent
The HTTP specification clearly stipulates that the browser should send a brief user proxy string,
Abstract:There are already many documents and materials on the Internet about various browser models, but few of them can fully explain several concepts. Most of the information is outdated, and some content may no longer be applicable. In this
1. Firefox
Gecko is the Firefox rendering engine. The original gecko was developed as part of a generic Mozilla browser, and the first browser to use the Gecko engine was Netscape6;
We can use the user agent detection: The following JS code:
This article to everyone about PHP to determine whether the user browser installed Alexa toolbar program, the principle is very simple we just get and user user-agent recognition characters, and then judge to know that the user is not installed
PHP checks whether your browser has installed the alexa toolbar. This article introduces PHP to determine whether the alexa tool is installed in the User's browser. The principle is very simple. we only need to get the User-Agent character
Do the front-end for many years, although not often need hack, but we often encounter each browser performance inconsistencies. Based on this, in some cases we would be extremely reluctant to use this unfriendly way to achieve the desired page
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