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HTML: (Hypertext Mark-up language) Hypertext Markup Language; tags in two kinds of: 1. Closed:<p>test< p> 2. Non-closed:<br/> Tagged nesting: such as: <div ><i></i></div> Browser only know: HTML, decorate with CSS, and use Javescript to do some special effects; Background server Three kinds of technology: jsp/asp/php Mobile Development:ios/android http Protocol: send a request to access the server, actually copy the contents of the server to the local; The minimum computer storage unit is bit (bit) a bit can only save 0 or 1; in bytes (byte) transfer; 8bit=1byte 1024byte=1k & nbsp The character variable is called encoding; byte into Word multibyte decoding; Plain text files and hypertext files, the former only puts the data and content, cannot record the style of the data. And the latter can put the style ; html is the language that is responsible for describing the semantics of the document; In addition to semantics, nothing else; All markup is to add semantics to the text; different tags have different semantics; <p>paragraph Paragraph abbreviations, there are two cases: 1. The tag ends with a line break; 2. New segment wrapping is encountered; symbol: greater than:> less than number:< Double quotes:" There are two types of links: one is the internal one is the external; hotspot: The resource that can be jumped is called the hotspot; hyperlink has the # sign: Document Internal link; & nbsp H1~H6 default to:h4; There are four marker segments in the Web page;<p> is the normal segment;<address> tilt segment;<blockquote> Indents all lines;<pre> preserves the text in a predefined format; <em></em> on the part of the content inclined;<sup></sup> Mark;<sub></sub> under the mark; <ul>: There are three kinds of styles; type= "square" square symbol; <OL>: There are five styles: numbers; a;a;i;i; start=2 starting from 2; <dl> definition list, pointing to is <dt> (explanation) and <dd> (terminology) A term can define multiple interpretations; can have no terminology, can not explain; <HR noshed size=15 align=center width=50% (relative width)/width=50px; (relative width) > font : size font sizes; color color; face style img:alt indicates the hint text when the picture is not loaded; the path uses relative paths as far as possible; foreground and background interaction in two ways:<a> and <form > The name of the box should be the same; <frameset> and <body> can only be selected by two; frame-level frame; rows portrait; cols; horizontal; iframe Floating frame;< marquee> scrolling Text;
HTML5 base Note (1)
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