HTML writing specifications, what are the points of note

1, the first declaration format and encoding format, pay attention to the difference between HTML5 and html4.0, pay attention to the different browser rendering role;

2, the related content of the

3, to ensure that the introduction of jquery.js files are compressed files, that is, min.js;

4, all tags must be closed labels, such as <br/>

5, try to use a non-compatible label, such as span, EM, strong, optgroup, label;

6, try to make the wording of the label, such as H1,img and so on;

7, as little as possible nested <div>, more use <p><a> tags; inline elements cannot nest block-level elements;

8, the HTML document after the URL is best to add/, avoid redirection, for example: href=http://www.webjx.com/css/"http://itaolun.com/",;

9, can be presented in the background of the picture, as far as possible to write CSS style;

10, the important picture must add ALT attribute; Add title to important elements and truncated elements;

11, special symbols use: As far as possible using code substitution: such as < (<) & > (&gt;) & Space () &? (?) and so on;

HTML writing specifications, what are the points of note