throttle_debounce.js

const throttle = (func, delay) => {
  let executable = true;
  return () => {
    if (executable) {
      func();
      executable = false;
      setTimeout(() => {
        executable = true;
      }, delay);
    }
  };
}

const debounce = (func, delay) => {
  let lastTimeStamp = Infinity;
  return () => {
    const now = Date.now();
    if (lastTimeStamp - now > delay) {
      func();
    }
    lastTimeStamp = now;
  };
}