5 Reasons Why Browser Sniffing Stinks
▻https://www.sitepoint.com/why-browser-sniffing-stinks
“Browser sniffing is the act of detecting the web browser a visitor is using in order to serve version-specific pages, scripts, images, or other content. The technique was popular around 10 years ago because Microsoft and Netscape introduced their own technologies and web standards were in their infancy. In those dark days, it was fairly common to write two or more client-side scripts to implement identical functionality in different browsers.”