22 lines
556 B
JavaScript
22 lines
556 B
JavaScript
import raf from './raf';
|
|
function throttleByAnimationFrame(fn) {
|
|
let requestId;
|
|
const later = args => () => {
|
|
requestId = null;
|
|
fn(...args);
|
|
};
|
|
const throttled = function () {
|
|
if (requestId == null) {
|
|
for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
|
|
args[_key] = arguments[_key];
|
|
}
|
|
requestId = raf(later(args));
|
|
}
|
|
};
|
|
throttled.cancel = () => {
|
|
raf.cancel(requestId);
|
|
requestId = null;
|
|
};
|
|
return throttled;
|
|
}
|
|
export default throttleByAnimationFrame; |