Sunday, 11 January 2015

Attributes provide additional information about HTML

Attributes provide additional information about HTML elements. 


 HTML Attributes

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

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:


<html lang="en-US">

<h1>My First Heading</h1>

<p>My first paragraph.</p>


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 hacktech4all":

The href Attribute

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


<a href="">This is a link</a>

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 asattributes:


<img src="hacktech4all.jpg" width="104" height="142">

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.


<img src="hacktech4all.jpg" alt="" width="104" height="142"> 

Single or Double Quotes?

Double style quotes are the most common in HTML, but single style can also be used.
In some situations, when the attribute value itself contains double quotes, it is necessary to use single quotes:


<p title='John "ShotGun" Nelson'>

Or vice versa:




 HTML Attributes

Below is an alphabetical list of some attributes often used in HTML:
Attribute                                             Description
alt                  Specifies an alternative text for an image
disabledSpecifies that an input element should be disabled
hrefSpecifies the URL (web address) for a link
idSpecifies a unique id for an element
srcSpecifies the URL (web address) for an image
styleSpecifies an inline CSS style for an element
titleSpecifies extra information about an element (displayed as a tool tip)
valueSpecifies the value (text content) for an input element.

For any other assistance watch this video

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