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This article mainly shows you "what elements are removed from the new features of html5". The content is simple and clear. I hope it can help you solve your doubts. Let me lead you to study and learn this article "what elements are removed from the new features of html5".

Elements removed from html5's new features: basefont, big, center, font, s, strike, tt, u, frame, frameset, noframes, acronym, applet, and so on.

The operating environment of this tutorial: windows7 system, HTML5 version, Dell G3 computer.

What are the new features of html5 and what elements have been removed?

HTML5 is no longer a subset of SGML, but is mainly about the increase of image, location, storage, multitasking and other functions.

Painting canvas

Video and audio elements for media playback

Local offline storage localStorage long-term storage data, the data will not be lost after the browser is closed

SessionStorage data is automatically deleted after the browser is closed

Better semantic content elements, such as article, footer, header, nav, section

Form controls, calendar, date, time, email, url, search

New technologies webworker, websocket, Geolocation

Removed elements:

To define an acronym, replace it with a label

Tag is used to define embedded applet, please use it instead

The tag is used to set the default font size of the document

Tags make larger text.

Tag centers the text it surrounds horizontally

Label defines a list of directories

Specify the size, font and color of the text

Tags define child windows (frames)

Label defines the frameset

Display text for browsers that do not support frames

Label defines the text with a delete line, use the tag instead of

Label defines typewriter text

Label defines the text with a delete line

Label definition underlined text

Elements of pure expression: basefont,big,center,font, smeme, strike, Tet, etc.

Elements that have a negative impact on usability: frame,frameset,noframes

Confusion: acronym,applet,dir

Support for new HTML5 tags:

IE8/IE7/IE6 supports tags generated by the document.createElement method

You can use this feature to enable these browsers to support new HTML5 tags

After the browser supports the new tag, you also need to add the default style of the tag.

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