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How Can I Elegantly Disable CSS Transitions During DOM Element Resizing for Smooth Animations?

Barbara Streisand
Release: 2024-12-01 19:33:20
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How Can I Elegantly Disable CSS Transitions During DOM Element Resizing for Smooth Animations?

Elegant Disabling of CSS Transition Effects for Smooth Resizing

You've encountered a situation where disabling CSS transition effects is critical for seamless resizing of a DOM element. To address this, let's explore an elegant and effective solution.

CSS for Disabling Transitions:

Create a '.notransition' class to override existing transition rules:

.notransition {
  -webkit-transition: none !important;
  -moz-transition: none !important;
  -o-transition: none !important;
  transition: none !important;
}
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Javascript Implementation:

Using Plain Javascript:

someElement.classList.add('notransition'); // Disable transitions
doWhateverCssChangesYouWant(someElement);
someElement.offsetHeight; // Trigger a reflow
someElement.classList.remove('notransition'); // Re-enable transitions
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Using jQuery:

$someElement.addClass('notransition'); // Disable transitions
doWhateverCssChangesYouWant($someElement);
$someElement[0].offsetHeight; // Trigger a reflow
$someElement.removeClass('notransition'); // Re-enable transitions
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Explanation:

  1. Apply the '.notransition' class: This class will disable transition effects by overriding CSS transition properties.
  2. Perform desired CSS changes: Change the height or other CSS properties as needed with the transitions disabled.
  3. Trigger a reflow: Read the element's offsetHeight property to force a reflow and flush pending CSS changes.
  4. Undo the class: Once the reflow is triggered, remove the '.notransition' class to restore transitions.

This approach ensures that CSS transitions are gracefully disabled and re-enabled during the resizing process, allowing smooth and seamless animations.

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