防抖节流

防抖

export const debounce = (() => {
  let timer = null
  return (callback, wait = 200) => {
    timer&&clearTimeout(timer)
    timer = setTimeout(callback, wait)
  }
})()

// vue2
methods: {
  loadList() {
    debounce(() => {
      console.log('加载数据')
    }, 500)
  }
}

节流

export const throttle = (() => {
  let last = 0
  return (callback, wait = 200) => {
    let now = +new Date()
    if (now - last > wait) {
      callback()
      last = now
    }
  }
})()