URL

• A Uniform Resource Locator(URL) colloquially termed a web address,
• A typical URL could have the form: http://www.example.com/index.html , which indicates a protocol http, a hostname www.example.com, and a file name index.html.
• syntax

scheme:[//[user[:password]@]host[:port]][/path][?query][#fragment]

read more: wiki: url

Web

• mm网友说,

" 如果把网页比作一个人，那么HTML便是他的骨架，JS便是他的肌肉，CSS便是它的衣服。"