js时间转化

 const defaultTicks = 621355968000000000;

 export function convertDateToTicks(date = new Date()) {
     return date.getTime() * 10000 + defaultTicks;
 }

 export function convertTicksToLocalDate(ticks) {
     return new Date((ticks - defaultTicks) / 10000 + new Date().getTimezoneOffset() * 60 * 1000);
 }

 export function formatDate(data, format) {
     var o = {
         "M+": data.getMonth() + 1, //month
         "d+": data.getDate(), //day
         "h+": data.getHours(), //hour
         "m+": data.getMinutes(), //minute
         "s+": data.getSeconds(), //second
         "q+": Math.floor((data.getMonth() + 3) / 3), //quarter
         "k": data.getDay(),
         "S": data.getMilliseconds() //millisecond
     }

     if (/(y+)/.test(format)) {
         format = format.replace(RegExp.$1, (data.getFullYear() + "").substr(4 - RegExp.$1.length));
     }

     for (var k in o) {
         if (new RegExp("(" + k + ")").test(format)) {
             format = format.replace(RegExp.$1, RegExp.$1.length == 1 ? o[k] : ("00" + o[k]).substr(("" + o[k]).length));
         }
     }
     return format;
 }