33 lines
652 B
JavaScript
33 lines
652 B
JavaScript
'use strict';
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let callbacks = [];
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let running = false;
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function resize() {
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if (!running) {
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running = true;
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if (window.requestAnimationFrame) {
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window.requestAnimationFrame(runCallbacks);
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} else {
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setTimeout(runCallbacks, 66);
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}
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}
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}
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function runCallbacks() {
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callbacks.forEach(function(callback) {
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callback();
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});
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running = false;
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}
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function add(callback) {
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callbacks.push(callback);
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}
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function remove(callback) {
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callbacks = callbacks.filter(c => c !== callback);
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}
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window.addEventListener('resize', resize);
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module.exports = {add: add, remove: remove};
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