Elements Main article: HTML element HTML documents imply a structure of nested HTML elements. These are indicated in the document by HTML tags, enclosed in angle brackets thus: In the simple, general case, the extent of an element is indicated by a pair of tags: a start tag and end tag . The text content of the element, if any, is placed between these tags. Tags may also enclose further tag markup between the start and end, including a mixture of tags and text. This indicates further, nested, elements, as children of the parent element. The start tag may also include attributes within the tag. These indicate other information, such as identifiers for sections within the document, identifiers used to bind style information to the presentation of the document, and for some tags such as the used to embed images, the reference to the image resource. Some elements, such as the line break , do not permit any embedded content, either text or further tags. These require only a single empty tag (akin to a start tag) and do not use an end tag. Many tags, particularly the closing end tag for the very commonly-used paragraph element , are optional. An HTML browser or other agent can infer the closure for the end of an element from the context and the structural rules defined by the HTML standard. These rules are complex and not widely understood by most HTML coders. The general form of an HTML element is therefore: content. Some HTML elements are defined as empty elements and take the form . Empty elements may enclose no content, for instance, the BR tag or the inline IMG tag. The name of an HTML element is the name used in the tags. Note that the end tags name is preceded by a slash character, /, and that in empty elements the end tag is neither required nor allowed. If attributes are not mentioned, default values are used in each case. Element examples Header of the HTML document:.... The title is included in the head, for example: The Title Headings: HTML headings are defined with the to tags: Heading level 1 Heading level 2 Heading level 3 Heading level 4 Heading level 5 Heading level 6 Paragraphs: Paragraph 1 Paragraph 2 Line breaks:. The difference between and is that br breaks a line without altering the semantic structure of the page, whereas p sections the page into paragraphs. Note also that br is an empty element in that, while it may have attributes, it can take no content and it may not have an end tag. This is a paragraph with line breaks This is a link in HTML. To make a link you use the tag. The href= attribute holds the URL address of the link. A Link to Google!
Posted on: Sun, 15 Jun 2014 13:51:03 +0000
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