问题
I want to know the what the following meta tags mean and do:
<meta name="revised" content="Alpha, 9/18/2013" /><meta http-equiv="refresh" content="30" /><meta http-equiv="content-type" content="text/html;charset=UTF-8" />
回答1:
<meta http-equiv="refresh" content="30" />
Is used to make browser refresh the page after 30 seconds
<meta name="revised" content="Alpha, 9/18/2013" />
The revised meta tag records when the last update was done to the site
<meta http-equiv="content-type" content="text/html;charset=UTF-8" />
is used to define the character set for an HTML document
来源：https://stackoverflow.com/questions/12473853/meaning-of-various-meta-tags