| Revision as of 22:16, 19 November 2004 view sourceMav (talk | contribs)Extended confirmed users77,874 editsm remove internal self-ref← Previous edit | Revision as of 00:16, 3 December 2004 view source Pookleblinky (talk | contribs)111 edits Couldn't help it. Why not hyperlink every other word in an article on hyperlinks?Next edit → | ||
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| A '''hyperlink''', or simply a ''']''', is a reference in a ] document to another document or other resource. As such it would be similar to a ] in literature. However, combined with a data network and suitable access protocol, it can be used to fetch the resource referenced. This can then be saved, viewed, or displayed as part of the referencing document. | A '''hyperlink''', or simply a ''']''', is a ] in a ] ] to another document or other ]. As such it would be similar to a ] in ]. However, combined with a ] ] and suitable ], it can be used to fetch the resource referenced. This can then be saved, viewed, or displayed as part of the referencing document. | ||
| A link has two ends, called anchors, and a direction. The link starts at the source anchor and points to the destination anchor. However, the term '' link'' is often used for the source anchor, while the destination anchor is called the link target. | A ] has two ends, called ], and a ]. The link starts at the ] anchor and points to the ] anchor. However, the term '' link'' is often used for the source anchor, while the destination anchor is called the link ]. | ||
| The most common link target is a ] used in the ]. This can refer to a document, e.g. a webpage, or other resource, or to a ''position'' in a webpage. The latter is achieved by means of a ] with a "name" or "id" attribute at that position of the HTML document. The URL of the position is the URL of the webpage with "#''attribute name''" appended. | The most common link target is a ] used in the ]. This can refer to a document, e.g. a ], or other resource, or to a ''position'' in a webpage. The latter is achieved by means of a ] with a "name" or "id" attribute at that position of the HTML document. The URL of the position is the URL of the webpage with "#''attribute name''" appended. | ||
| A ] usually displays a hyperlink in some distinguishing way, e.g. in a different colour, font or style. A ] ] may also change into a hand motif to indicate a link. In most browsers, links are displayed in underlined blue text when not cached, but underlined purple text when cached. When the user activates the link (e.g. by clicking on it with the mouse) the browser will display the target of the link. If the target is not a html-file, depending on the file type and on the browser and its plug-ins, an other program may be activated to open the file. | A ] usually displays a hyperlink in some distinguishing way, e.g. in a different ], ] or ]. A ] ] may also change into a ] ] to indicate a link. In most ], links are displayed in underlined ] ] when not ], but underlined ] text when cached. When the ] activates the link (e.g. by clicking on it with the ]) the browser will display the target of the link. If the target is not a html-file, depending on the ] type and on the browser and its ], an other ] may be activated to open the file. | ||
| The HTML code contains some or all of the four main characteristics of a link: | The HTML code contains some or all of the four main characteristics of a link: | ||
| Line 17: | Line 17: | ||
| <a href="''URL''" title="''link title''" class="''link class''">''link label''</a> | <a href="''URL''" title="''link title''" class="''link class''">''link label''</a> | ||
| When the cursor hovers over a link, depending on the browser, some informative text about the link is shown: | When the ] hovers over a link, depending on the browser, some informative text about the link is shown: | ||
| *it pops up, not in a regular window, but in a special hover box, which disappears when the cursor is moved away (sometimes it disappears anyway after a few seconds, and reappears when the cursor is moved away and back). IE and Mozilla Firefox show the title, Opera also shows the URL. | *it pops up, not in a regular ], but in a special ] box, which disappears when the cursor is moved away (sometimes it disappears anyway after a few seconds, and reappears when the cursor is moved away and back). ] and ] show the ], ] also shows the URL. | ||
| *In addition, the URL may be shown in the status bar. Opera and Mozilla Firefox give the full URL, IE gives it from the last slash, or if it ends with a slash, from the last but one. | *In addition, the URL may be shown in the ]. Opera and Mozilla Firefox give the full URL, IE gives it from the last ], or if it ends with a slash, from the last but one. | ||
| The ] ] uses ], a measure of ] to determine which page should be ranked first. The more pages that have a hyperlink pointing to a page, the higher rank that page gets. It is actually slightly more complicated than that, see ] for more information. | The ] ] uses ], a measure of ] to determine which page should be ranked first. The more pages that have a hyperlink pointing to a page, the higher rank that page gets. It is actually slightly more complicated than that, see ] for more information. | ||
| ] sued ] under U.S. Patent No. 4,873,662 claiming that Prodigy infringed its patent on web hyperlinks. However, after costly litigation, a court found for Prodigy, ruling that British Telecom's patent did not actually cover web hyperlinks. Hyperlinks were first described in ] in the landmark paper '']'', as well in the widely-known ] starting in the 1960s. | ] sued ] under U.S. ] No. 4,873,662 claiming that Prodigy infringed its patent on web hyperlinks. However, after costly ], a ] found for Prodigy, ruling that ] Telecom's patent did not actually cover ] hyperlinks. Hyperlinks were first described in ] in the landmark paper '']'', as well in the widely-known ] starting in the ]. | ||
| While hyperlinking among pages of Internet content has long been considered an intrinsic feature of the Internet medium, some websites have claimed that linking to them is not allowed without permission, see e.g. and (in Dutch). You do not need to ask permission to link to any page of Misplaced Pages's. | While hyperlinking among pages of Internet content has long been considered an ] feature of the Internet ], some websites have claimed that linking to them is not allowed without ], see e.g. and (in Dutch). You do not need to ask permission to link to any page of Misplaced Pages's. | ||
| See also ]. | See also ]. | ||
| == Legal aspect == | == ] ] == | ||
| In some jurisdictions it is or was (for example the Netherlands, see ]) held that hyperlinks are not merely ]s or citations, but are devices for copying web pages. Although this principle is generally rejected by ] , the courts that adhere to it see the mere publication of a hyperlink that connects to illegal material to be an illegal act in itself, regardless of whether referencing illegal material is illegal. | In some ] it is or was (for example the Netherlands, see ]) held that hyperlinks are not merely ]s or ], but are ] for copying web pages. Although this principle is generally rejected by ] , the courts that adhere to it see the mere ] of a hyperlink that connects to illegal ] to be an ] ] in itself, regardless of whether referencing illegal material is illegal. | ||
| ==External links== | ==External links== | ||
| * - case law summary, links to relevant court rulings worldwide and to relevant articles about hyperlinking | * - case ] ], links to relevant court rulings worldwide and to relevant ] about hyperlinking | ||
Revision as of 00:16, 3 December 2004
A hyperlink, or simply a link, is a reference in a hypertext document to another document or other resource. As such it would be similar to a citation in literature. However, combined with a data network and suitable access protocol, it can be used to fetch the resource referenced. This can then be saved, viewed, or displayed as part of the referencing document.
A link has two ends, called anchors, and a direction. The link starts at the source anchor and points to the destination anchor. However, the term link is often used for the source anchor, while the destination anchor is called the link target.
The most common link target is a URL used in the World Wide Web. This can refer to a document, e.g. a webpage, or other resource, or to a position in a webpage. The latter is achieved by means of a HTML element with a "name" or "id" attribute at that position of the HTML document. The URL of the position is the URL of the webpage with "#attribute name" appended.
A web browser usually displays a hyperlink in some distinguishing way, e.g. in a different colour, font or style. A mouse cursor may also change into a hand motif to indicate a link. In most browsers, links are displayed in underlined blue text when not cached, but underlined purple text when cached. When the user activates the link (e.g. by clicking on it with the mouse) the browser will display the target of the link. If the target is not a html-file, depending on the file type and on the browser and its plug-ins, an other program may be activated to open the file.
The HTML code contains some or all of the four main characteristics of a link:
- link target (URL)
- link label
- link title
- link class or link id
It uses the HTML element "a" with the attribute "href" and optionally also the attributes "title", and "class" or "id":
<a href="URL" title="link title" class="link class">link label</a>
When the cursor hovers over a link, depending on the browser, some informative text about the link is shown:
- it pops up, not in a regular window, but in a special hover box, which disappears when the cursor is moved away (sometimes it disappears anyway after a few seconds, and reappears when the cursor is moved away and back). IE and Mozilla Firefox show the title, Opera also shows the URL.
- In addition, the URL may be shown in the status bar. Opera and Mozilla Firefox give the full URL, IE gives it from the last slash, or if it ends with a slash, from the last but one.
The Google search engine uses PageRank, a measure of link popularity to determine which page should be ranked first. The more pages that have a hyperlink pointing to a page, the higher rank that page gets. It is actually slightly more complicated than that, see PageRank for more information.
British Telecom sued Prodigy under U.S. Patent No. 4,873,662 claiming that Prodigy infringed its patent on web hyperlinks. However, after costly litigation, a court found for Prodigy, ruling that British Telecom's patent did not actually cover web hyperlinks. Hyperlinks were first described in 1945 in the landmark paper As We May Think, as well in the widely-known project Xanadu starting in the 1960s.
While hyperlinking among pages of Internet content has long been considered an intrinsic feature of the Internet medium, some websites have claimed that linking to them is not allowed without permission, see e.g. and (in Dutch). You do not need to ask permission to link to any page of Misplaced Pages's.
See also deep linking.
Legal aspect
In some jurisdictions it is or was (for example the Netherlands, see Karin Spaink) held that hyperlinks are not merely references or citations, but are devices for copying web pages. Although this principle is generally rejected by digerati , the courts that adhere to it see the mere publication of a hyperlink that connects to illegal material to be an illegal act in itself, regardless of whether referencing illegal material is illegal.
External links
- Links & Law - case law summary, links to relevant court rulings worldwide and to relevant articles about hyperlinking