What elements have been removed from the new features of html5
elements removed in the new features of html5: basefont, big, center, font, s, strike, tt, u, frame, frameset, noframes, acronym, applet, etc.
The operating environment of this tutorial: Windows 7 system, HTML5 version, Dell G3 computer.
What are the new features of html5 and which elements have been removed?
-
HTML5is no longer a subset ofSGML, it is mainly about images, location, storage, multi-tasking and other functions Added- painting
canvas -
videoandaudioelements for media playback - Local offline storage
localStorageLong-term storage of data, the data will not be lost after the browser is closed -
sessionStoragedata will be automatically deleted after the browser is closed - Content elements with better semantics, such as
article,footer,header,nav,section - Form controls,
calendar,date,time,email,url,search - New Technology
webworker,websocket,Geolocation
- painting
-
Removed elements:
- Purely expressive elements:
basefont,big,center,font,s,strike,tt,u Elements that negatively impact usability:
frame,frameset,noframesConfuses:
acronym,applet,dir
##Define an acronym, please use the tag to replace it
##Support## The #
The tag is used to set the default font size of the document Labels make larger text.
The tag horizontally centers the text it surrounds Tag definition directory list Specifies the size and font of the text and color
tag defines child window (frame)
HTML5 - Purely expressive elements:
- New tag:
IE8/IE7/IE6- Support tags generated through the
- document.createElement
methodYou can use this feature to allow these browsers to supportHold HTML5 New tag After the browser supports new tags, you still need to add the default style of the tag
html video tutorial - document.createElement
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