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HTML attributes are special words which provide additional information about the elements or attributes are the modifier of the HTML element. Each element or tag can have attributes, which defines the behaviour of that element. Attributes should always be applied with start tag. The Attribute should always be applied with its name and value pair. The Attributes name and values are case sensitive. You can add multiple attributes in one HTML element, but need to give space between two attributes.

There are Basic or Core Attributres 

1. Title
2. Class
3. Id
4. Style
   

    Id Attribute
   

   The id attribute of an HTML tag can be used to uniquely identify any element within an HTML page. There are two primary reasons that you might want to use an id attribute on an element −

   • • If an element carries an id attribute as a unique identifier, it is possible to identify just that element and its content.
   • • If you have two elements of the same name within a Web page (or style sheet), you can use the id attribute to distinguish between elements that have the same name.

1. Title Attribute
   

   The title attribute gives a suggested title for the element. They syntax for the title attribute is similar as explained for id attribute −

   The behavior of this attribute will depend upon the element that carries it, although it is often displayed as a tooltip when cursor comes over the element or while the element is loading.

   Class Attribute

   The class attribute is used to associate an element with a style sheet, and specifies the class of element. You will learn more about the use of the class attribute when you will learn Cascading Style Sheet (CSS). So for now you can avoid it.

   The value of the attribute may also be a space-separated list of class names.

   Style Attribute

   The style attribute allows you to specify Cascading Style Sheet (CSS) rules within the element. At this point of time, we are not learning CSS, so just let's proceed without bothering much about CSS. Here, you need to understand what are HTML attributes and how they can be used while formatting content.