根据日期更换日历，js日期判断myDate，时间判断【常用】

 /*日期判断，更换日历*/
    var vDate = new Date();
    if((vDate.getMonth() + 1)<10){
    　　myDate = vDate.getFullYear() + '-' +'0'+ (vDate.getMonth() + 1) + '-' + vDate.getDate(); /*解决安卓浏览器时间显示问题*/
　　}else{
    　　myDate = vDate.getFullYear() + '-' + (vDate.getMonth() + 1) + '-' + vDate.getDate(); /*解决安卓浏览器时间显示问题*/
　　}
    var myDay = vDate.getDate();
    switch (myDay){
      case 3:
        $(".calendar img").attr("src","https://act.mcake.com/fangli/2020/pc/memberDay-3yue/images/calendar-1.png");
        break;
      case 10:
        $(".calendar img").attr("src","https://act.mcake.com/fangli/2020/pc/memberDay-3yue/images/calendar-2.png");
        break;
      case 17:
        $(".calendar img").attr("src","https://act.mcake.com/fangli/2020/pc/memberDay-3yue/images/calendar-3.png");
        break;
      case 24:
        $(".calendar img").attr("src","https://act.mcake.com/fangli/2020/pc/memberDay-3yue/images/calendar-4.png");
        break;
      case 31:
        $(".calendar img").attr("src","https://act.mcake.com/fangli/2020/pc/memberDay-3yue/images/calendar-5.png");
        break;
    }