Javascript 手写必备

防抖

function debounce(fun,delay){
  let timer = null
  return function(){
    if(timer){
      clearTimeout(timer)
    }
    timer = setTimeout(()=>{
      fun.apply(this,arguments)
    },delay)
  }
}

节流

function throttle(fun,delay){
  let valid = true
  return function(){
    if(!valid) return
    valid = false
    setTimeout(()=>{
      fun.apply(this,arguments)
      valid = true
    },delay)
  }
}

new

function createObject(obj){
  let ins
  function F(){}
  F.prototype = p
  ins = new F()
  return ins
}

防抖https://www.bilibili.com/video/BV1fB4y1F7Vd/?spm_id_from=333.788.recommend_more_video.3

防抖

防抖

防抖

``