


How Can I Replace Deprecated SMIL Animations with CSS or Web Animations?
Oct 25, 2024 pm 05:34 PMHover Effect: CSS Animation or Web Animations
Problem:
SMIL's animate tag is deprecated, and CSS hover transitions need to be implemented to replace it.
Solution:
Remove the set tags and add CSS to the element_tpl:hover pseudo-class:
<code class="css">.element_tpl:hover { stroke-opacity: 0.5; }</code>
Scaling Effect upon Change
Problem:
Animate the element to scale a few times upon a committed change.
Solution:
Consider the following options:
- CSS Animation: Use CSS keyframes to achieve scaling:
<code class="css">@keyframes scale-animation { 0% { transform: scale(1); } 50% { transform: scale(1.12); } 100% { transform: scale(1); } }</code>
Then apply the animation to the element:
<code class="css">.element_tpl { animation: scale-animation 0.5s infinite alternate; }</code>
- Web Animations: Use the Web Animations API to programmatically control the scaling:
<code class="javascript">// Create a new animation const animation = document.timeline.addAnimation(); // Define keyframes const keyframes = [ { transform: 'scale(1)', offset: 0 }, { transform: 'scale(1.12)', offset: 0.5 }, { transform: 'scale(1)', offset: 1 } ]; // Apply keyframes to the animation animation.effect = keyframes; // Target the element animation.target = document.querySelector('.element_tpl');</code>
Scale Up and Down on Click
Problem:
Animate the element to scale up and down upon clicking.
Solution:
- CSS Transitions: Use CSS transitions to trigger the scale changes on mousedown and mouseup events:
<code class="css">.element_tpl { transition: transform 0.2s; } .element_tpl:active { transform: scale(1.1); }</code>
- Web Animations: Use the Web Animations API to handle the click event and scale the element accordingly:
<code class="javascript">// Add event listener document.querySelector('.element_tpl').addEventListener('click', (event) => { // Create a new animation const animation = document.timeline.addAnimation(); // Define keyframes const keyframes = [ { transform: 'scale(1)', offset: 0 }, { transform: 'scale(1.1)', offset: 0.2 }, { transform: 'scale(1)', offset: 0.4 }, ]; // Apply keyframes to the animation animation.effect = keyframes; // Target the element animation.target = event.target; });</code>
Saving SMIL Animations
Problem:
Transfer SMIL animations to CSS or Web animations.
Solution:
Use the SMIL polyfill created by Eric Willigers: https://github.com/ericwilligers/svg-animation. This polyfill converts SMIL animations to Web Animations, providing an alternative way to implement them.
The above is the detailed content of How Can I Replace Deprecated SMIL Animations with CSS or Web Animations?. For more information, please follow other related articles on the PHP Chinese website!

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