How Can I Temporarily Disable CSS Transition Effects for Smooth Element Resizing?

Disabling CSS Transition Effects Temporarily

In web development, it's often necessary to disable CSS transition effects when making changes to an element to ensure smooth resizing or appearance adjustments. Here's the most elegant solution:

Solution

Create a CSS Class:

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

Use JavaScript (without jQuery):

someElement.classList.add('notransition'); // Disable transitions
doWhateverCssChangesYouWant(someElement);
someElement.offsetHeight; // Trigger a reflow, flushing the CSS changes
someElement.classList.remove('notransition'); // Re-enable transitions

Use JavaScript with jQuery:

$someElement.addClass('notransition'); // Disable transitions
doWhateverCssChangesYouWant($someElement);
$someElement[0].offsetHeight; // Trigger a reflow, flushing the CSS changes
$someElement.removeClass('notransition'); // Re-enable transitions

Explanation:

This solution uses a CSS class to override any existing transition settings with !important. It then adds the class to the element, makes the desired CSS changes, forces a reflow using offsetHeight, and finally removes the class to re-enable transitions.

Considerations

• Ensure that .notransition overrides existing rules (consider using !important in the CSS).
• Force a reflow after disabling transitions by reading offsetHeight or using another appropriate method.
• This solution works cross-browser and is the most elegant method to temporarily disable CSS transition effects.

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