let todaytime = new Date()

   let permittime = new Date("2020-04-24 09:00:00")     

   if ((todaytime < permittime)) { //安卓手机上能获正常值,但在苹果手机上,小程序在发布后不管todaytime如何变化,此句值总是false,为何?

     console.log('系统提示目前尚未到儿童体检预约时间！')

  }