What's the label for? What's the difference between what I used and what I didn't use?
That is the most commonly used page content in general use Head encoding (like simplified Chinese GB2312 or international code UTF-8), and the page title declaration (which is displayed in the browser title bar text), the style sheet declaration (Style), scripting language code declaration (Script) etc.. In addition, now more and more attention to search engine optimization processing, the page keywords and content summary of the announcement is also carried out in Head.
A standard web page contains two parts: Head and Body. Head is used to announce the basic parameters of some pages. It is not displayed on the page, and Body is the main content of the page.
