Custom data Attributes

Extra information about conventional HTML elements without a visual representation is stored in custom data-* attributes. The purpose of these characteristics is to hold information that JavaScript will need.

Key points:

  • Flexibility: JavaScript allows you to save any type of data for subsequent use.
  • Accessibility: Using the dataset attribute in JavaScript, accessible via the HTMLElement interface.

Example:

<article id="post" data-author="Jay" data-published="2024-05-04">
    <h2>Custom Data Attributes</h2>
    <p>Data stored in this element can be used by scripts.</p>
</article>

These data attributes can be accessed in JavaScript in the following manner:

let article = document.querySelector('#post');
console.log(article.dataset.author); // Outputs: Joy console.log(article.dataset.published); // Outputs: 2024-05-04

These advanced attributes (class, id, style, and data-*) provide a powerful approach to control styling, behavior, and custom data within a webpage. They also improve the functionality and interaction of HTML elements with CSS and JavaScript. When used properly, they can significantly improve web development projects' performance, maintainability, and efficiency.

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HTML

Custom data Attributes

Beginner 5 Hours

Extra information about conventional HTML elements without a visual representation is stored in custom data-* attributes. The purpose of these characteristics is to hold information that JavaScript will need.

Key points:

  • Flexibility: JavaScript allows you to save any type of data for subsequent use.
  • Accessibility: Using the dataset attribute in JavaScript, accessible via the HTMLElement interface.

Example:

<article id="post" data-author="Jay" data-published="2024-05-04">
    <h2>Custom Data Attributes</h2>
    <p>Data stored in this element can be used by scripts.</p>
</article>

These data attributes can be accessed in JavaScript in the following manner:

let article = document.querySelector('#post');
console.log(article.dataset.author); // Outputs: Joy console.log(article.dataset.published); // Outputs: 2024-05-04

These advanced attributes (class, id, style, and data-*) provide a powerful approach to control styling, behavior, and custom data within a webpage. They also improve the functionality and interaction of HTML elements with CSS and JavaScript. When used properly, they can significantly improve web development projects' performance, maintainability, and efficiency.

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