js精确计算两个日期时间差的方法
js精确计算两个日期时间差的方法
找了比较多的方法做参考，还是日期控件里的办法好，在这里摘抄一下

//js日期解析函数  function alertparseDate(s){       var today = new Date();/(\d+)\/(\d+)\/(\d+)\s*(\d*):?(\d*)/.exec(s);var ymd = s.split(' ');var ymd_r = ymd[0].split('/');var his_r = ymd[1].split(':');var m1 = (ymd_r[0] && ymd_r[0] > 1899 && ymd_r[0] < 2101) ? parseFloat(ymd_r[0]) : today.getFullYear();var m2 = (ymd_r[1] && (ymd_r[1] > 0 && ymd_r[1] < 13)) ? parseFloat(ymd_r[1]) : today.getMonth() + 1;var m3 = (ymd_r[2] && (ymd_r[2] > 0 && ymd_r[2] < 32)) ? parseFloat(ymd_r[2]) : today.getDate();var m4 = (his_r[0] && (his_r[0] > -1 && his_r[0] < 24)) ? parseFloat(his_r[0]) : 0;var m5 = (his_r[1] && (his_r[1] > -1 && his_r[1] < 60)) ? parseFloat(his_r[1]) : 0;/(\d+)\/(\d+)\/(\d+)\s*(\d*):?(\d*)/.exec("0000-00-00 00\:00");    var date2 =  new Date(m1, m2 - 1, m3, m4, m5);//用距标准时间差来获取相距时间var minsec = Date.parse(today) - Date.parse(date2);var days = minsec / 1000 / 60 / 60 / 24; //factor: second / minute / hour / dayreturn parseInt(days);  }

/(\d+)\/(\d+)\/(\d+)\s*(\d*):?(\d*)/.exec(s);