What are the tags that are not supported in html5?

The tags not supported in html5 are: 1. acronym, used to define acronyms, which can be replaced by abbr; 2. basefont, which can be replaced by css styles; 3. applet, which can be replaced by object; 4. dir , defines the directory list, which can be replaced by ul; 5. big, defines large text, etc.

The operating environment of this tutorial: Windows 7 system, HTML5 version, Dell G3 computer.

Unsupported tags in html5

##TagsDescription <td style="word-break: break-all;"></td> <td>Not supported in HTML 5. <span class="deprecated">Define the noframe part. </span> </td> <td style="word-break: break-all;"></td> <td>Not supported in HTML 5. <span class="deprecated">Define preformatted text. </span> </td>

	Not supported in HTML 5. Define acronym.
	Not supported in HTML 5. Define applet.
	Not supported in HTML 5. Please use CSS instead.
	Not supported in HTML 5. Define large text.
	Not supported in HTML 5. Define centered text.
	Not supported in HTML 5. Define directory list.
	Not supported in HTML 5.
	Not supported in HTML 5. Define sub-window (frame).
	Not supported in HTML 5. Define the set of frames.
	Not supported in HTML 5. Define a single-line input field.
	Not supported in HTML 5. Define strikethrough text.
	Not supported in HTML 5. Define strikethrough text.
	Not supported in HTML 5. Define typewriter text.
	Not supported in HTML 5. Define underlined text.

Among them, some tags can be replaced by other tags

• abbr replaces acronym (used to represent abbreviations)

• object replaces applet

• ul replaces dir

Extended knowledge: Unsupported attributes

Many expressive attributes have also been removed by the new specification, as follows:

• align

• On the body tag The link, vlink, alink, text attributes

• bgcolor

##height and width
iframe The scrolling attribute on the element
valign
hspace and vspace
cellpadding on the table tag , cellspacing and border attributes
profile attribute on header tag
target attribute on link tag a
The longdesc attribute of img and iframe elements
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