How to Dynamically Manage CSS Class Properties with JavaScript?

How to Alter the CSS of a Class Using JavaScript

When working with CSS classes, you may encounter situations where you need to dynamically manage their properties using JavaScript. This question explores the most effective way to alter the CSS of a class specifically, as opposed to relying on element IDs with getElementById.

Solution

While it's possible to access style rules and make changes for specific classes using the styleSheets array, it's not the recommended approach. As the answer suggests, a cleaner and more maintainable solution is to maintain separate style rules for different display purposes.

For instance, instead of toggling the display of elements using JavaScript, you can create two style rules - one that defines display: none and another that defines display: inline. When you want to hide an element, simply apply the 'display-none' style rule to the target class. To make it visible again, remove the 'display-none' style rule and apply the 'display-inline' style rule.

Implementation

<code class="html"><!-- Create two style rules -->
<style>
  .display-none {
    display: none;
  }

  .display-inline {
    display: inline;
  }
</style></code>

<code class="javascript">// Hide an element
document.getElementById('element-id').classList.add('display-none');

// Make it visible again
document.getElementById('element-id').classList.remove('display-none');
document.getElementById('element-id').classList.add('display-inline');</code>

This approach provides greater flexibility and maintainability, as you can create multiple style rules for different display purposes and easily switch between them using JavaScript.

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