HTML Head
The HTML <head> Element
The <head> element is a container for metadata (data about data).HTML metadata is data about the HTML document. Metadata is not displayed.
Metadata typically define document title, styles, links, scripts, and other meta information.
The following tags describe metadata: <title>, <style>, <meta>, <link>, <script>, and <base>.
Omitting <html> and <body>?
In the HTML5 standard, the <html> tag, the <body> tag, and the <head> tag can be omitted.The following code will validate as HTML5:
Example
<!DOCTYPE html>
<title>Page Title</title>
<h1>This is a heading</h1>
<p>This is a paragraph.</p>
<!DOCTYPE html>
<html lang="en-US">
Omitting <html> and <body> can crash badly-written DOM/XML software.
Finally, omitting <body> can produce errors in older browsers (IE9).
Omitting <head>
In the HTML5 standard, the <head> tag can also be omitted.By default, browsers will add all elements before <body>, to a default <head> element.
You can reduce the complexity of HTML, by omitting the <head> tag:
Example
<!DOCTYPE html>
<html>
<title>Page Title</title>
<body>
<h1>This is a heading</h1>
<p>This is a paragraph.</p>
</body>
</html>
The HTML <title> Element
The <title> element defines the title of the document.The <title> element is required in all HTML/XHTML documents.
The <title> element:
- defines a title in the browser tab
- provides a title for the page when it is added to favorites
- displays a title for the page in search engine results
Example
<!DOCTYPE html>
<html>
<title>Page
Title</title>
<body>
The content of the document......
</body>
</html>
The HTML <style> Element
The <style> element is used to define style information for an HTML document.Inside the <style> element you specify how HTML elements should render in a browser:
The HTML <link> Element
The <link> element defines the page relationship to an external resource.The <link> element is most often used to link to style sheets:
The HTML <meta> Element
The <meta> element is used to specify page description, keywords, author, and other metadata.Metadata is used by browsers (how to display content), by search engines (keywords), and other web services.
Define keywords for search engines:
<meta name="keywords" content="HTML, CSS, XML, XHTML, JavaScript">
<meta name="description" content="Free Web tutorials on HTML and CSS">
<meta charset="UTF-8">
<meta name="author" content="Hege Refsnes">
<meta http-equiv="refresh" content="30">
Example
<meta name="description" content="Free Web tutorials">
<meta
name="keywords" content="HTML,CSS,XML,JavaScript">
<meta name="author"
content="Hege Refsnes">
<meta charset="UTF-8">
The HTML <script> Element
The <script> element is used to define client-side JavaScripts.The script below writes Hello JavaScript! into an HTML element with id="demo":
Example
<script>
function myFunction {
document.getElementById("demo").innerHTML = "Hello JavaScript!";
}
</script>
The HTML <base> Element
The <base> element specifies the base URL and base target for all relative URLs in a page:HTML head Elements
| Tag | Description |
|---|---|
| <head> | Defines information about the document |
| <title> | Defines the title of a document |
| <base> | Defines a default address or a default target for all links on a page |
| <link> | Defines the relationship between a document and an external resource |
| <meta> | Defines metadata about an HTML document |
| <script> | Defines a client-side script |
| <style> | Defines style information for a document |
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