HTML Attributes

HTML attributes are used to define the characteristics of an HTML element.
They are placed within the element's opening tag & consist of two parts: the name and the value.

Name: Specifies the property for that element.
Value: Sets the value of that property for the element.

Types of HTML Attributes

There are three main types of HTML attributes:

Core/Global Attributes: These are basic attributes that can be applied to most HTML elements.
Internationalization Attributes: These attributes help adapt the document to different languages and regions. Examples include lang and dir.
Generic Attributes: These attributes provide additional information about the element but don't necessarily affect its appearance or behavior.

Core/Global attributes are some of the most widely used attributes in HTML.
There are four main types:

id
class
title
style

ID Attribute

The ID attribute is used to assign a unique identifier to an HTML element.
Each element with an ID has its own unique identity, similar to how each individual has a unique identity. Multiple elements cannot have the same ID.
Example:

  <p id="html">This is an HTML tutorial</p>
  <p id="python">This is a Python tutorial</p>

In this example, the ID attribute helps to distinguish between two paragraphs by having different values: "html" and "python".

Class Attribute

The class attribute is used to associate an HTML element with a particular class, typically for styling or JavaScript manipulation.
Unlike the ID attribute, the class attribute is not unique, and multiple elements can share the same class.

Title Attribute

The title attribute provides additional information about an element and is often displayed as a tooltip when the mouse hovers over it.
Example:

  <h4 title="hello, motto">Title attribute</h4>

Style Attribute

The style attribute allows for inline styling of HTML elements.
It is used in conjunction with CSS properties to directly style individual elements within the HTML code.

Case sensivity

The HTML standard is flexible about the case of attribute names, allowing them to be written in either uppercase or lowercase, such as "title" or "TITLE."
However, for best practices and compatibility with stricter document types like XHTML, the W3C recommends using lowercase attributes.

HTML Comments

Comments in HTML are like little notes you leave in your code for yourself that doesn't show up in actual website.

HTML primarily supports two types of comments:

Single-line Comments

Single-line comments are contained within one line. They are useful for short annotations.

Example:

  <!-- This is a single-line comment -->

Multi-line Comments

Multi-line comments span across multiple lines, making them ideal for detailed explanations or temporarily disabling blocks of code.