js new Date()实例测试

var t = new Date().toString(); //t = "Thu Oct 31 2019 11:36:57 GMT+0800 (中国标准时间)"
 var t1 = new Date();
 var data_arry =[];
 var that = new Date();
 data_arry.push(that.constructor()); // Thu Oct 31 2019 11:50:26 GMT+0800 (中国标准时间)"
data_arry.push(that.getDate()); //31
data_arry.push(that.getDay()); // 4
data_arry.push(that.getFullYear()); //2019
data_arry.push(that.getHours()); // 11
data_arry.push(that.getMilliseconds()); // 401
data_arry.push(that.getMinutes()); // 50
data_arry.push(that.getMonth()); //9
data_arry.push(that.getSeconds()); //26
data_arry.push(that.getTime()); //1572493826401
data_arry.push(that.getTimezoneOffset()); //-480
data_arry.push(that.getUTCDate()); //31
data_arry.push(that.getUTCDay());
data_arry.push(that.getUTCFullYear());
data_arry.push(that.getUTCHours());
data_arry.push(that.getUTCMilliseconds());
data_arry.push(that.getUTCMinutes());
data_arry.push(that.getUTCMonth());
data_arry.push(that.getUTCSeconds());
data_arry.push(that.getYear());
data_arry.push(that.setDate());
data_arry.push(that.setFullYear());
data_arry.push(that.setHours());
data_arry.push(that.setMilliseconds());
data_arry.push(that.setMinutes());
data_arry.push(that.setMonth());
data_arry.push(that.setSeconds());
data_arry.push(that.setTime());
data_arry.push(that.setUTCDate());
data_arry.push(that.setUTCFullYear());
data_arry.push(that.setUTCHours());
data_arry.push(that.setUTCMilliseconds());
data_arry.push(that.setUTCMinutes());
data_arry.push(that.setUTCMonth());
data_arry.push(that.setUTCSeconds());
data_arry.push(that.setYear());
data_arry.push(that.toDateString());
data_arry.push(that.toGMTString());
//data_arry.push(that.toISOString()); 报错
data_arry.push(that.toJSON());
data_arry.push(that.toLocaleDateString());
data_arry.push(that.toLocaleString());
data_arry.push(that.toLocaleTimeString());
data_arry.push(that.toString());
data_arry.push(that.toTimeString());
data_arry.push(that.toUTCString());
data_arry.push(that.valueOf());

 function get_nowtime() {
      var date = new Date();
      return (date.getFullYear() + '-' + (date.getMonth() + 1) + '-' + date.getDate());
    }
    console.log(get_nowtime());

var timestamp =Date.parse(new Date());

var timestamp =(new Date()).valueOf();

var timestamp=new Date().getTime()；