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Keyframe
A simple tiny keyframe utility for custom animation.
Install
npm install --save keyframe
or
yarn add keyframe
Usage
Pass an object witch every key is the keyframe from 0 to 100.
Each keyframe is a function that will be called during the keyframe interval. Each passed function is cached and runs only once when the value is the same.
And will return a function to run through the keyframes progress.
const run = keyframe({
50: (d) => update(d),
100: (d) => update(d),
});
run(0); // 0
run(0.25); // 0.5
run(0.5); // 1
run(0.75); // 0.5
run(1); // 1Example
import keyframe from 'keyframe';
...
const moveTo = (x, y) => {
div.style.transform = `translate(${x}px, ${y}px)`;
};
// From (0% -> 50%) move the div left 150px
// then from (50% -> 100%) move the div up 50px.
const onSliderUpdate = keyframe({
// d is the duration between 0% -> 50%.
50: d => moveTo(d * 150, 0),
// d is the duration between 50% -> 100%.
100: d => moveTo(150, d * -50),
});
// Return range between 0 and 1.
DOMslider.addEventListener('input', () => onSliderUpdate(slider.value / 100), true);Check the examples/ folder to see full examples.
Or check out the DEMO page
Development
yarn install
yarn run dev
Test
yarn test