HTML attributes provide additional information about elements within an HTML document. Every HTML element can have attributes. Attributes are always defined in the start tag. They are specified using a name/value pair format, where the attribute name defines the property, and its value provides specific details, like name="value". These attributes impact content display and interaction on web pages.
- Here are some commonly used HTML attributes:
- class: Defines one or more class names for an element, used for styling and applying CSS rules.
- id: A unique identifier for an HTML element, used for styling or JavaScript interaction.
- src: Specifies the source URL for external resources like images, audio, or video.
- href: Specifies the URL of the linked resource, typically used in anchor (a) elements for hyperlinks.
- alt: Provides alternative text for images, displayed if the image cannot be loaded or is unavailable.
Syntax:
<element attribute_name="attribute_value">
<img src="image.jpg" alt="An image" class="image-class" id="image-id">
In this example, the img element has three attributes: src, alt, and class. The src attribute specifies the image source URL, alt provides alternative text, and class defines a class name for styling. The id attribute is a unique identifier for this image.
Meta tags provide essential information about HTML documents. They are self-closing tags and significantly impact browser functionality, search engine optimization (SEO), character set declaration, and viewport control. Here are some commonly used meta tag attributes:
charset: Defines the character encoding for the HTML document.
name: Specifies the name of the metadata attribute.
content: Provides information associated with the specified name.
http-equiv: Sets an HTTP header for the content, typically used for backward compatibility.
scheme: Specifies the format used to interpret the content value, often for data formats.
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