Character encodings in HTML: Difference between revisions

Revision as of 04:50, 26 July 2022

Revision as of 21:50, 24 October 2022

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* [[Shift JIS]]{{efn|The specification includes [[IBM]] and [[NEC]] extensions (see [[Windows-31J]]).<ref>{{cite web |url=https://encoding.spec.whatwg.org/#index-jis0208 |title=5. Indexes (§ Index jis0208) |institution=[[WHATWG]] |work=Encoding Standard |last=van Kesteren |first=Anne |author-link=Anne van Kesteren}}</ref>}}

* [[ISO-2022-JP]]{{efn|The specification uses the same index as used for Shift JIS (insofar as is within reach), i.e. includes NEC extensions. [[Half-width kana]] is converted to fullwidth by the encoder,<ref>{{cite web |url=https://encoding.spec.whatwg.org/#index-iso-2022-jp-katakana |title=5. Indexes (§ Index ISO-2022-JP katakana) |institution=[[WHATWG]] |work=Encoding Standard |last=van Kesteren |first=Anne |author-link=Anne van Kesteren}}</ref> but accepted using an escape sequence (ESC 0x28 0x49) by the decoder.<ref name="whatwgjisdecoder">{{cite web |url=https://encoding.spec.whatwg.org/#iso-2022-jp-decoder |title=12.2.1. ISO-2022-JP decoder |institution=[[WHATWG]] |work=Encoding Standard |last=van Kesteren |first=Anne |author-link=Anne van Kesteren}}</ref> [[Shift Out]] and [[Shift In]] (0x0E and 0x0F) are excluded entirely to prevent attacks.<ref name="whatwgjisdecoder" /><ref>{{cite web |url=https://encoding.spec.whatwg.org/#iso-2022-jp-encoder |title=12.2.2. ISO-2022-JP encoder |institution=[[WHATWG]] |work=Encoding Standard |last=van Kesteren |first=Anne |author-link=Anne van Kesteren}}</ref>}}

* [[EUC-KR]]{{efn|Actually [[Unified Hangul Code]], which is a superset which covers the entire [[Hangul Syllables (Unicode block)|Hangul Syllables]] block.<ref>{{cite web |url=https://encoding.spec.whatwg.org/#index-euc-kr |title=5. Indexes (§ index EUC-KR) |work=Encoding Standard |institution=[[WHATWG]] |last=van Kesteren |first=Anne |author-link=Anne van Kesteren}}</ref>}}

* [[UTF-16BE]]{{efn|Specified for decoding only; form submissions from UTF-16-coded documents are to be encoded in [[UTF-8]].<ref name="outputenc">{{cite web |url=https://encoding.spec.whatwg.org/#output-encodings |title=4.3. Output encodings |work=Encoding Standard |institution=[[WHATWG]] |last=van Kesteren |first=Anne |author-link=Anne van Kesteren}}</ref>}}

* [[UTF-16LE]]{{efn|For compatibility with deployed content, also specified for the plain <code>[[UTF-16]]</code> label,<ref>{{cite web |url=https://encoding.spec.whatwg.org/#utf-16le |title=14.4. UTF-16LE |work=Encoding Standard |institution=[[WHATWG]] |last=van Kesteren |first=Anne |author-link=Anne van Kesteren}}</ref> although a [[byte order mark]] (BOM), if present, takes priority over any label.<ref>{{cite web |url=https://encoding.spec.whatwg.org/#decode |title=6. Hooks for standards (§ decode) |work=Encoding Standard |institution=[[WHATWG]] |last=van Kesteren |first=Anne |author-link=Anne van Kesteren}}</ref> Specified for decoding only; form submissions from UTF-16-coded documents are to be encoded in [[UTF-8]].<ref name="outputenc" />}}