HTML Elements
HTML documents are defined by HTML elements.
HTML Elements
An HTML element is everything from the start tag to the end tag:
HTML Element Syntax
- An HTML element starts with a start tag / opening tag
- An HTML element ends with an end tag / closing tag
- The element content is everything between the start and the end tag
- Some HTML elements have empty content
- Empty elements are closed in the start tag
- Most HTML elements can have attributes
Nested HTML Elements
Most HTML elements can be nested (can contain other HTML elements).HTML documents consist of nested HTML elements.
HTML Document Example
HTML Example Explained
The <p> element:
The element has a start tag <p> and an end tag </p>.
The element content is: This is my first paragraph.
The <body> element:
The element has a start tag <body> and an end tag </body>.
The element content is another HTML element (a p element).
The <html> element:
The element has a start tag <html> and an end tag </html>.
The element content is another HTML element (the body element).
Don't Forget the End Tag
Some HTML elements might display correctly even if you forget the end tag:
The example above works in most browsers, because the closing tag is considered optional.
Never rely on this. Many HTML elements will produce unexpected results and/or errors if you forget the end tag .
Empty HTML Elements
HTML elements with no content are called empty elements.<br> is an empty element without a closing tag (the <br> tag defines a line break).
Tip: In XHTML, all elements must be closed. Adding a slash inside the start tag, like <br />, is the proper way of closing empty elements in XHTML (and XML).
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