Wednesday, 30 November 2016

HTML ATTRIBUTES

WHAT IS HTML Attributes

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

1-  lang Attribute
       The language of the document can be declared in the <html> tag.
      The language is declared with the lang attribute.
     Declaring a language is important for accessibility applications (screen readers) and      search engines:
    <html lang="en-US">

2- title Attribute
Here, a title attribute is added to the <p> element. The value of the title attribute will be displayed as a tooltip when you mouse over the paragraph:
       <p title="I'm a tooltip">
        This is a paragraph.
       </p>

3- href Attribute
    HTML links are defined with the <a> tag. The link address is specified in                    the href attribute:
<a href="http://www.w3schools.com">This is a link</a>


4- 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
     <img src="w3schools.jpg" width="104" height="142">


5- alt Attribute
   The alt attribute specifies an alternative text to be used, when an image cannot be displayed.
The value of the attribute can be read by screen readers. This way, someone "listening" to the webpage, e.g. a blind person, can "hear" the element.
<img src="w3schools.jpg" alt="W3Schools.com" width="104" height="142">


SOME IMPORTANT POINTS WHILE USING ATTRIBUTES

A->Use Lowercase Attributes

The HTML5 standard does not require lowercase attribute names.
The title attribute can be written with uppercase or lowercase like Title and/or TITLE.
BUT USE OF LOWERCASE WILL BE GOOD .

B->Single or Double Quotes.

Double quotes around attribute values are the most common in HTML, but single quotes 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:
<p title="John 'ShotGun' Nelson">
MM



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