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HTML Attributes


Attributes provide additional information about HTML elements.


What is HTML Attributes

  • It can have attributes
  • HTML Attributes provide additional information about an element
  • HTML Attributes are always specified in the start tag
  • HTML Attributes come in value/name pairs like: value="name"

The lang Attribute

The document language can be declared in the <html> tag.

The language is declared in the lang attribute.

Declaring a language is important for accessibility applications (screen readers) and search engines

<!DOCTYPE html>
<html lang="en-US">
<body>

<h1>My First Heading</h1>
<p>My first paragraph.</p>

</body>
</html>


The title Attribute

HTML paragraphs are defined with the <p> tag.

In this example, the <p> element has a title attribute. The value of the attribute is "About welookups":

Example

<p title="About welookups">
welookups is a web developer's site.
It provides tutorials
of web programming,
including HTML, CSS, JavaScript, XML, SQL, PHP, ASP, etc.
</p>
Try it Yourself »

what is The href Attribute

HTML links are defined with the <a> tag. The link address is specified in the href attribute

Example

<a href="http://www.welookups.com">This is a link</a>
Try it yourself »

Size Attributes

HTML images are defined with the <img> tag.

The filename of the source (src), and the size of the image (width and height) are all provided as attributes:

Example

<img src="welookups.jpg" width="104" height="142">
Try it Yourself »

The image size is specified in pixels: width="104" means 104 screen pixels wide.

You will learn more about images and the <img> tag later in this tutorial.


The alt Attribute

The alt attribute specifies an alternative text to be used, when an HTML element cannot be displayed.

The value of the attribute can be read by "screen readers". This way, someone "listening" to the webpage, i.e. a blind person, can "hear" the element.

Example

<img src="welookups.jpg" alt="welookups.com" width="104" height="142">
Try it Yourself »

We Suggest: Always Use Lowercase Attributes

The HTML5 standard does not require lower case attribute names.

The title attribute can be written with upper or lower case like Title and/or TITLE.

W3C recommends lowercase in HTML4, and demands lowercase for stricter document types like XHTML.


We Suggest: Always Quote Attribute Values

The HTML5 standard does not require quotes around attribute values.

The href attribute, demonstrated above, can be written as:

Example

<a href=http://www.welookups.com>
Try it Yourself »

W3C recommends quotes in HTML4, and demands quotes for stricter document types like XHTML.

Sometimes it is necessary to use quotes. This will not display correctly, because it contains a space:

Example

<p title=About welookups>
Try it Yourself »

Single or Double Quotes?

single style can use but Double style quote are common HTML

atribute contain double quotes,it is necessary to use single quotes

<p title='John "ShotGun" Nelson'>