22 lines
548 B
JavaScript
22 lines
548 B
JavaScript
const throttle = (fn, wait) => {
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let inThrottle, lastFn, lastTime;
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return function() {
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const context = this,
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args = arguments;
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if (!inThrottle) {
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fn.apply(context, args);
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lastTime = Date.now();
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inThrottle = true;
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} else {
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clearTimeout(lastFn);
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lastFn = setTimeout(function() {
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if (Date.now() - lastTime >= wait) {
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fn.apply(context, args);
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lastTime = Date.now();
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}
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}, Math.max(wait - (Date.now() - lastTime), 0));
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}
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};
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};
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module.exports = throttle;
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