说说focus /focusin /focusout /blur 事件

参考 https://www.cnblogs.com/RuMengkai/p/6230917.html

加：

 var myFunction = null;
         $(ele).on('focusin',function(){
            //键盘弹起 (获取焦点)
            clearTimeout(myFunction)
          }) 
          $(ele).on('focusout', function() {
            //失去焦点 键盘收起
                clearTimeout(myFunction)
                myFunction = setTimeout(function(){
                  window.scrollTo({top: 0, left: 0, behavior: 'smooth'})
                },200)
            })