debounce-throttle

debounce-throttle.js

export function debounce(fn, delay = 500) {
  let timer = null
  return function () {
    clearTimeout(timer)
    timeout = setTimeout(() => {
      fn.apply(this, arguments)
    }, delay)
  }
}

export function throttle (fn, delay = 500) {
  let lastTime = 0
  return function () {
    const now = Date.now()
    if (now - lastTime > delay) {
      fn.apply(this, arguments)
      lastTime = now
    }
  }
}