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'));