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- Declaring Elements. In a DTD, XML elements are declared with the following syntax:
- The mass number of an element, A, is the number of nucleons (protons and neutrons) in the atomic nucleus. Different isotopes of a given element are distinguished by their mass numbers, which are conventionally written as a superscript on the left hand side of the atomic symbol (e.g.
- Chemical element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed. Learn more about the origins, distribution, and characteristics of chemical elements in this article.
An HTML element is defined by a start tag, some content, and an end tag.
HTML Elements
The HTML element is everything from the start tag to the end tag:
Examples of some HTML elements:
Start tag | Element content | End tag |
---|---|---|
My First Heading | ||
My first paragraph. | ||
none | none |
Note: Some HTML elements have no content (like the
element). These elements are called empty elements. Empty elements do not have an end tag!
Nested HTML Elements
HTML elements can be nested (this means that elements can contain other elements).
All HTML documents consist of nested HTML elements.
The following example contains four HTML elements (,
,
and
):
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Example
My First Heading
My first paragraph.
Example Explained
An Element Is Best Described As A Material
The element is the root element and it defines the whole HTML document.
It has a start tag and an end tag
.
Then, inside the element there is a
element:
My First Heading
My first paragraph.
An Element Has 76 Electrons
HTML Elements
The HTML element is everything from the start tag to the end tag:
Examples of some HTML elements:
Start tag | Element content | End tag |
---|---|---|
My First Heading | ||
My first paragraph. | ||
none | none |
Note: Some HTML elements have no content (like the
element). These elements are called empty elements. Empty elements do not have an end tag!
Nested HTML Elements
HTML elements can be nested (this means that elements can contain other elements).
All HTML documents consist of nested HTML elements.
The following example contains four HTML elements (,
,
and
):
PDFpen 12.1 Includes Page Label Support and More June 17, 2020 July 27, 2020 / page labels page numbering pdfpen 12 PDFpen and PDFpenPro 12.1 now supports page labels, making it easier to view and navigate documents which have a mixture of different page numbering formats. Go through the screens to purchase the US $35 single user upgrade to PDFpen 12, or the US $50 single user upgrade to PDFpenPro 12 from PDFpen. Complete your purchase and PDFpen/PDFpenPro will register with your new license. Family and Office Pack upgrade pricing also available. PDFpen 12 includes many additional improvements, including the ability to select customized paper styles and specify orientation for new documents. We've also integrated several additional compression methods such as MRC, CCITT, and post OCR compression to reduce file sizes as you scan, edit, and save. Pdfpen 12. Edit PDFs easily with PDFpen! Add text, images, signatures, highlights, and comments. Make changes, fix typos, fill out forms, and redact sensitive information. Use OCR (Optical Character Recognition) to turn a scan into editable text. Export from PDF to Microsoft® Word. Make changes and mark up.
Example
My First Heading
My first paragraph.
Example Explained
An Element Is Best Described As A Material
The element is the root element and it defines the whole HTML document.
It has a start tag and an end tag
.
Then, inside the element there is a
element:
My First Heading
My first paragraph.
An Element Has 76 Electrons
The element defines the document's body.
It has a start tag and an end tag
.
Then, inside the element there are two other elements:
and
:
My First Heading
My first paragraph.
The
element defines a heading.
It has a start tag
and an end tag
:The
element defines a paragraph.
It has a start tag
and an end tag
Never Skip the End Tag
Some HTML elements will display correctly, even if you forget the end tag:
Example
This is a paragraph
This is a paragraph
However, never rely on this! Unexpected results and errors may occur if you forget the end tag!
Empty HTML Elements
HTML elements with no content are called empty elements.
The
tag defines a line break, and is an empty element without a closing tag:
Example
This is a
paragraph with a line break.
HTML is Not Case Sensitive
HTML tags are not case sensitive:
means the same as
.
The HTML standard does not require lowercase tags, but W3C recommends lowercase in HTML, and demands lowercase for stricter document types like XHTML.
HTML Tag Reference
Max sport 3 online. W3Schools' tag reference contains additional information about these tags and their attributes.
Tag | Description |
---|---|
Defines the root of an HTML document | |
Defines the document's body | |
to | Defines HTML headings |
For a complete list of all available HTML tags, visit our HTML Tag Reference.
Look up Element, element, or elements in Wiktionary, the free dictionary. |
Element may refer to:
Science[edit]
- Chemical element, a pure substance of one type of atom
- Heating element, a device that generates heat by electrical resistance
- Orbital elements, parameters required to identify a specific orbit of one body around another
- DNA element, a functional region of DNA, including genes and cis-regulatory elements
Mathematics[edit]
- Element (mathematics), one of the constituents of a set
- Differential element, an infinitesimally small change of a quantity in an integral
- Euclid's Elements, a mathematical treatise on geometry and number theory
Philosophy and religion[edit]
- Classical elements, ancient beliefs about the fundamental types of matter (earth, air, fire, water)
- The elements, a religious term referring to the bread and wine of the Eucharist
- Five elements (Japanese philosophy), the basis of the universe according to Japanese philosophy
- Mahābhūta, the four great elements in Buddhism, five in Hinduism
- Tattva, an elemental basis of the universe according to Hindu Samkhya philosophy
- Wuxing (Chinese philosophy), sometimes translated as five elements, the basis of the universe according to Chinese Taoin
Technology[edit]
- Element (UML), part of the Unified Modeling Language superstructure
- Data element, a unit of data
- Electrical element, an abstract part of a circuit
- HTML element, a standard part of an HTML document
- Markup element, a part of a document defined by a markup language
- Structural element, in construction and engineering
- Adobe Photoshop Elements, a bitmap graphics program
- Adobe Premiere Elements, a video editing computer program
- Honda Element, a car
- Element, a Matrix-based chat application formerly known as Riot.im
Business[edit]
- Element (Tampa), a skyscraper in Tampa, Florida, US
- Element by Westin, a brand of Starwood Hotels and Resorts Worldwide
- Element Electronics, an American electronics company
- Element Skateboards, a skateboard manufacturer
- Elements (restaurant), in Princeton, New Jersey
- Elements, Hong Kong, a shopping mall in Hong Kong
Entertainment[edit]
Music[edit]
- 'Element' (song), a 2017 song by Kendrick Lamar
- 'Element', a song by Deerhunter from their 2019 album Why Hasn't Everything Already Disappeared?
- Element (production team), a Norwegian production and songwriting team
- Elements (band), American jazz band 1980s–1990s
- Elements (Atheist album), 1993
- Elements (B.o.B album), 2016
- Elements (Ludovico Einaudi album), 2015
- Elements (Roger Glover album), 1978
- Elements (Steve Howe album), 2003
- Elements, debut EP by Elaine, 2019
- Elements Box by Mike Oldfield, four CD edition
- Elements – The Best of Mike Oldfield, single CD edition
- The Elements (Joe Henderson album), 1973
- The Elements (Second Person album), 2007
- The Elements (TobyMac album), 2018
- 'The Elements' (song), by Tom Lehrer
Other entertainment[edit]
- Elements (miniseries), a Cartoon Network miniseries
- Elements trilogy, three films written and directed by Deepa Mehta
- Elements (esports), a team in the European League of Legends Championship Series
- Element ( skateboarding) a skateboarding company
Other[edit]
- Element (criminal law), a basic set of common law principles regarding criminal liability
- Elements (journal), a scientific publication about mineralogy, geochemistry, and petrology
- Element Magazine, Asian men's magazine
- The elements, a term used to refer to natural perils such as erosion, rough terrain, rust, cold, heat, and disastrous weather.
See also[edit]
- All pages with titles beginning with Element and All pages with titles beginning with Elements
- All pages with titles containing Element and All pages with titles containing Elements