javascript-时间戳

 // 获取当前时间戳(以s为单位)
 var timestamp = Date.parse(new Date());
 timestamp = timestamp / 1000;
 console.log("当前时间戳为：" + timestamp);

 // 获取某个时间格式的时间戳
 var stringTime = "2017-12-06 21:51:12";
 var timestamp2 = Date.parse(new Date(stringTime));
 timestamp2 = timestamp2 / 1000;
 //2017-12-06 21:51:12的时间戳为：1512568272
 console.log(stringTime + "的时间戳为：" + timestamp2);

 var timestamp3 = 1512567397;
 var newDate = new Date();
 newDate.setTime(timestamp3 * 1000);
 // Wed Dec 06 2017
 console.log(newDate.toDateString());
 // Wed, 06 Dec 2017 13:36:37 GMT
 console.log(newDate.toGMTString());
 // 2017-12-06T13:36:37.000Z
 console.log(newDate.toISOString());
 // 2017-12-06T13:36:37.000Z
 console.log(newDate.toJSON().replace(/:\d{1,2}$/,''));
 // 2017-12-6
 console.log(newDate.toLocaleDateString().replace(/\/+/g,'-'));
 // 2017/12/6 下午9:36:37
 console.log(newDate.toLocaleString());
 // 下午9:36:37
 console.log(newDate.toLocaleTimeString());
 // Wed Dec 06 2017 21:36:37 GMT+0800 (中国标准时间)
 console.log(newDate.toString());
 // 21:36:37 GMT+0800 (中国标准时间)
 console.log(newDate.toTimeString());
 // Wed, 06 Dec 2017 13:36:37 GMT
 console.log(newDate.toUTCString());

　　

 var newDate = new Date();
 Date.prototype.format = function(format) {
        var date = {
           "M+": this.getMonth() + 1,
           "d+": this.getDate(),
           "h+": this.getHours(),
           "m+": this.getMinutes(),
           "s+": this.getSeconds(),
           "q+": Math.floor((this.getMonth() + 3) / 3),
           "S+": this.getMilliseconds()
        };
        if (/(y+)/i.test(format)) {
               format = format.replace(RegExp.$1, (this.getFullYear() + '').substr(4 - RegExp.$1.length));
        }
        for (var k in date) {
               if (new RegExp("(" + k + ")").test(format)) {
                      format = format.replace(RegExp.$1, RegExp.$1.length == 1? date[k] : ("00" + date[k]).substr(("" + date[k]).length));
               }
        }
        return format;
 }
 console.log(newDate.format('yyyy-MM-dd h:m:s'));