Throttled.js

const throttle = (fn, delay) => {
  let lastRan;
  let timerId;
  return function() {
    const ctx = this;
    const args = arguments;
    if(!lastRan){
      fn.apply(ctx, args)
      lastRan = Date.now();
    } else {
      console.log("trying...")
      clearTimeout(timerId);
      timerId = setTimeout(() => {
        if(Date.now() - lastRan >= delay) {
          fn.apply(ctx, args)
          lastRan = Date.now();
        }
      }, lastRan - Date.now() + delay);
    }
   }
  }
  
  const logger = throttle(()=>console.log("Hello at "+ new Date), 2000)
  
  setInterval(logger, 500)