解决微信浏览器web页面键盘收起页面不回弹

(function () {
    function isWeiXinAndIos () {
        let ua = '' + window.navigator.userAgent.toLowerCase()
        let isWeixin = /MicroMessenger/i.test(ua)
        let isIos = /\(i[^;]+;( U;)? CPU.+Mac OS X/i.test(ua)
        return isWeixin && isIos
    }
    let myFunction
    let isWXAndIos = isWeiXinAndIos()
    if (isWXAndIos) {
      document.body.addEventListener('focusin', () => {
        clearTimeout(myFunction)
      })
      document.body.addEventListener('focusout', () => {
        clearTimeout(myFunction)
        myFunction = setTimeout(function() {
          window.scrollTo({top: 0, left: 0, behavior: 'smooth'})
        }, 200)
      })
    }
})()