In the learning hyperlink, the HTML click on the QQ icon will automatically start their own local QQ client, the method is to use the Hyperlink protocol
Some common protocols are as follows:
File resources are files on the local computer. Format file:///
FTP accesses resources through FTP. Format ftp://
Gopher accesses the resource through the Gopher protocol.
HTTP accesses the resource over HTTP. Format/HTTP/
HTTPS accesses the resource through secure HTTPS. Format https://
The mailto resource is an e-mail address that is accessed through SMTP. Format mailto:
MMS plays the resource by supporting the MMS (streaming) protocol. (on behalf of software: Windows Media Player) format mms://
ED2K access to this resource through peer-to software that supports the ed2k (dedicated download link) protocol. (Representative software: Electric Donkey) format ed2k://
FlashGet access to this resource through peer-to software that supports FlashGet: (dedicated download link) protocol. (on behalf of the Software: Express) format flashget://
Thunder access to this resource through peer-to software that supports the Thunder (dedicated download link) protocol. (Representative software: Thunderbolt) format thunder://
News accesses the resource through NNTP.
Tencent by supporting Tencent (dedicated chat connection) protocol and user conversations. (on behalf of the software: QQ, TM) format tencent://message/?uin= number &site=&menu=yes
Msnim by supporting Msnim (dedicated chat connection) protocol and user conversations. (on behalf of software: MSN, WLM) format msnim:chat?contact= e-mail address
Type of Internet Service (protocol), the most popular type is the HTTP protocol