New Tags in HTML 5 and Changes
Document Sections in HTML
One of the most significant new features of HTML 5 is the ability to mark up sections of an HTML document using the sectioning tags and related tags, which can identify types of content within a section such as headers, footers and sidebars displayed along with a web page.
Embedding audio and video in HTML 5
There are new tags in HTML 5 that can be used to embed video or audio content in web pages.
Other New Tags in HTML 5
- <canvas> tag
- <command> tag
<datagrid> tag- <datalist> tag
- <datatemplate> tag
- <details> tag
- <dialog> tag
- <embed> tag
- <figcaption> tag
- <figure> tag
- <keygen> tag
- <mark> tag
- <meter> tag
- <output> tag
- <progress> tag
- <ruby>, <rt> and <rb> tags
- <rule> tag
- <summary> tag
- <time> tag
- <wbr> tag
Changes to existing HTML tags
- DOCTYPE declaration for HTML 5
- There is no DTD in HTML 5. This makes the HTML 5 DOCTYPE declaration much simpler and easier to remember.
- <html> tag for HTML 5
- In HTML 5, the <html> tag is the same as for the 2000-2010 Recommendations from the W3C HTML Working Group, which includes an
xmlnsattribute with the namespace URI assigned for HTML elements in 1999. The 1997 HTML 4 standard did not include namespaces yet. - col element
- The <col> tag for an HTML table column should not be coded without a colgroup element as its parent.
- HTML definition lists
The definition list, definition term and definition description elements are now called description list, description term and detail description respectively. To define a list of terms using the <dl> tag, such as for a glossary, each term defined should be identified by putting it inside a dfn element.