格式化日期，日期转化

let date = new Date();
      var timestamp1 = Date.parse(new Date());//转化成毫秒数
      console.log(timestamp1, "data");
      var myDate = new Date();
      console.log(myDate.getFullYear()); //获取完整的年份(4位,1970-????)
      console.log(myDate.getMonth()); //获取当前月份(0-11,0代表1月)
      console.log(myDate.getDate()); //获取当前日(1-31)
      console.log(myDate.getDay()); //获取当前星期X(0-6,0代表星期天)
      console.log(myDate.getTime()); //获取当前时间(从1970.1.1开始的毫秒数)
      console.log(myDate.getHours()); //获取当前小时数(0-23)
      console.log(myDate.getMinutes()); //获取当前分钟数(0-59)
      console.log(myDate.getSeconds()); //获取当前秒数(0-59)
      console.log(myDate.getMilliseconds()); //获取当前毫秒数(0-999)
      
      console.log(myDate.toLocaleDateString()); //获取当前日期
      
      console.log(myDate.toLocaleTimeString()); //获取当前时间
      console.log(myDate.toLocaleString()); //获取日期与时间**