Simple JS throttle function which ignores additional calls within the given timeframe

throttle.js

function throttle(callback, delay) {
  let isThrottled = false;
  function wrapper() {
    if (isThrottled) {
      return;
    }
    isThrottled = true;
    callback.apply(this, arguments);
    setTimeout(() => {
      isThrottled = false;
    }, delay);
  }
  return wrapper;
}