Difference between revisions of "HTML/entity"
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| − | [[category:computer terminology]]An [[HTML entity]] is a combination of characters which will be displayed within an [[HTML]] browser as a single character. All HTML entities begin with "&" (ampersand) and end with ";" (semicolon). Many entities have mnemonic names (such as "&amp;", which displays an ampersand); any possible character can be displayed as an entity by using the format "&#<u>number</u>;" where <u>number</u> is the output character's [[ASCII]] value in decimal. | + | [[page type::article]] |
| − | + | [[page type::reference]] | |
| + | [[thing type::character format]] | ||
| + | [[category:computer terminology]] | ||
| + | </hide> | ||
| + | ==About== | ||
| + | An [[HTML entity]] is a combination of characters which will be displayed within an [[HTML]] browser as a single character. All HTML entities begin with "&" (ampersand) and end with ";" (semicolon). Many entities have mnemonic names (such as "&amp;", which displays an ampersand); any possible character can be displayed as an entity by using the format "&#<u>number</u>;" where <u>number</u> is the output character's [[ASCII]] value in decimal. | ||
| + | ==Pages== | ||
| + | * [[/list]]: list of some of the most useful entities | ||
==Reference== | ==Reference== | ||
* {{wikipedia|Character entity reference}} | * {{wikipedia|Character entity reference}} | ||
| + | ** see also: {{l/wp|Percent-encoding}} | ||
* [http://htmlhelp.com/reference/html40/entities/ HTML 4.0 entities] | * [http://htmlhelp.com/reference/html40/entities/ HTML 4.0 entities] | ||
| + | * [https://developers.whatwg.org/named-character-references.html#named-character-references Named character references], in alphabetical order, including newer ones not supported by most browsers | ||
| + | * [https://www.freeformatter.com/html-entities.html HTML Entity List]: "Complete list of HTML entities with their numbers and names. Also included is a full list of ASCII characters that can be represented in HTML (i.e. printable characters)." | ||
==Questions== | ==Questions== | ||
| − | * | + | * Do search engines resolve html entities when indexing web pages? That is, if I spelled a word (e.g. "schmerglefrotz") entirely using html entities, would someone be able to find that page by typing "schmerglefrotz" (after the site had been spidered, of course)? (As a test, I will spell a completely different word using HTML entities, and try Googling it later: '''FRELGKLOTZ''') |
** '''2007-07-15 answer''': Yes, it does find it (though it took several months at least before this page got indexed). | ** '''2007-07-15 answer''': Yes, it does find it (though it took several months at least before this page got indexed). | ||
| − | + | ** '''2016-11-28 answer''': Searching for the word in question no longer produces any results. Neither does searching for "schmerglefrotz". | |
| − | + | ==Note== | |
| − | * | + | * '''2017-11-11''' MediaWiki 1.28.0 apparently no longer supports the "&#d;" style of entity; you now have to use named entities. |
| − | + | * '''2020-05-23''' This seems to have been fixed? | |
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Latest revision as of 16:14, 6 February 2025
About
An HTML entity is a combination of characters which will be displayed within an HTML browser as a single character. All HTML entities begin with "&" (ampersand) and end with ";" (semicolon). Many entities have mnemonic names (such as "&", which displays an ampersand); any possible character can be displayed as an entity by using the format "&#number;" where number is the output character's ASCII value in decimal.
Pages
- /list: list of some of the most useful entities
Reference
- Wikipedia
- see also: Percent-encoding
- HTML 4.0 entities
- Named character references, in alphabetical order, including newer ones not supported by most browsers
- HTML Entity List: "Complete list of HTML entities with their numbers and names. Also included is a full list of ASCII characters that can be represented in HTML (i.e. printable characters)."
Questions
- Do search engines resolve html entities when indexing web pages? That is, if I spelled a word (e.g. "schmerglefrotz") entirely using html entities, would someone be able to find that page by typing "schmerglefrotz" (after the site had been spidered, of course)? (As a test, I will spell a completely different word using HTML entities, and try Googling it later: FRELGKLOTZ)
- 2007-07-15 answer: Yes, it does find it (though it took several months at least before this page got indexed).
- 2016-11-28 answer: Searching for the word in question no longer produces any results. Neither does searching for "schmerglefrotz".
Note
- 2017-11-11 MediaWiki 1.28.0 apparently no longer supports the "&#d;" style of entity; you now have to use named entities.
- 2020-05-23 This seems to have been fixed?