js把日期字符串转换成时间戳

//获取当前时间：
  var myDate = new Date();//当前时间
  var year = myDate.getFullYear();//当前年份
  var month = myDate.getMonth() + 1;//当前月份
  var day = myDate.getDate();//当前日
  myDate.getYear();        //获取当前年份(2位)
    myDate.getFullYear();    //获取完整的年份(4位,1970-????)
    myDate.getMonth();       //获取当前月份(0-11,0代表1月)
    myDate.getDate();        //获取当前日(1-31)
    myDate.getDay();         //获取当前星期X(0-6,0代表星期天)
    myDate.getTime();        //获取当前时间(从1970.1.1开始的毫秒数)
    myDate.getHours();       //获取当前小时数(0-23)
    myDate.getMinutes();     //获取当前分钟数(0-59)
    myDate.getSeconds();     //获取当前秒数(0-59)
    myDate.getMilliseconds();    //获取当前毫秒数(0-999)
    myDate.toLocaleDateString();     //获取当前日期
    var mytime=myDate.toLocaleTimeString();     //获取当前时间
    myDate.toLocaleString( );        //获取日期与时间
  var oneDay = 1000 * 60 * 60 * 24;
//获取最近一周的日期
  var lastDate = new Date(myDate - oneDay * 6);
  var lastYear = lastDate.getFullYear();
  var lastMonth = lastDate.getMonth() + 1;
  var lastDay = lastDate.getDate();
//获取当前月的最后一天
  var day = new Date(year ,month , 0);
  var lastdate = day.getDate();//当前月的最后一天
//获取最近N个月的日期   
   var lastDate = new Date(myDate - oneDay * myDate.getDate());
   lastDate = new Date(lastDate - N * oneDay * (lastDate.getDate() - 1));
   var lastYear = lastDate.getFullYear();
   var lastMonth = lastDate.getMonth() + 1;
   var lastDay = lastDate.getDate();
//字符串转换为时间戳
   var date="2014-05-08 00:22:11";
   date = new Date(Date.parse(date.replace(/-/g, "/")));
   date = date.getTime();

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script type="text/javascript">
// 获取当前时间戳(以s为单位)
var timestamp = Date.parse(new Date());
timestamp = timestamp / 1000;
//当前时间戳为：1403149534
console.log("当前时间戳为：" + timestamp);

// 获取某个时间格式的时间戳
var stringTime = "2014-07-10 10:21:12";
var timestamp2 = Date.parse(new Date(stringTime));
timestamp2 = timestamp2 / 1000;
//2014-07-10 10:21:12的时间戳为：1404958872 
console.log(stringTime + "的时间戳为：" + timestamp2);

// 将当前时间换成时间格式字符串
var timestamp3 = 1403058804;
var newDate = new Date();
newDate.setTime(timestamp3 * 1000);
// Wed Jun 18 2014 
console.log(newDate.toDateString());
// Wed, 18 Jun 2014 02:33:24 GMT 
console.log(newDate.toGMTString());
// 2014-06-18T02:33:24.000Z
console.log(newDate.toISOString());
// 2014-06-18T02:33:24.000Z 
console.log(newDate.toJSON());
// 2014年6月18日 
console.log(newDate.toLocaleDateString());
// 2014年6月18日 上午10:33:24 
console.log(newDate.toLocaleString());
// 上午10:33:24 
console.log(newDate.toLocaleTimeString());
// Wed Jun 18 2014 10:33:24 GMT+0800 (中国标准时间)
console.log(newDate.toString());
// 10:33:24 GMT+0800 (中国标准时间) 
console.log(newDate.toTimeString());
// Wed, 18 Jun 2014 02:33:24 GMT
console.log(newDate.toUTCString());

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'));

</script>
posted @ 2017-06-07 16:58  Hakuna__Matata  阅读(2496)  评论(0)    收藏  举报