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MeyCry/index.ts

Created May 1, 2020 17:56
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throttle function
Raw
index.ts
/**
* Call fn not more often but and not less then ms
* @param {function} fn - function what need to call not often but and not less then ms
* @param {number} ms - time in milliseconds
* @return (any[]) => void
*/
export const throttle = (fn: (...args: any[]) => void, ms: number = 0) => {
let timeoutId = null;
let lastCall = 0;
return function(...args: any[]): void {
const now = Date.now();
clearTimeout(timeoutId);
if (now - lastCall >= ms) {
lastCall = now;
return fn.apply(this, args);
}
timeoutId = setTimeout(() => {
lastCall = Date.now();
fn.apply(this, args);
}, ms);
};
};
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