js将 “2021-07-06T06:23:57.000+00:00” 转换为年月日时分秒

//将“2021-07-06T06:23:57.000+00:00” ，转换为2021-07-06 14:23

let orderTime = "2021-07-06T06:23:57.000+00:00";
console.log(    this.transformTimestamp(orderTime)  );      //输出2021-07-06 14:23

//时间转换
transformTimestamp(timestamp){
    let a = new Date(timestamp).getTime();
    const date = new Date(a);
    const Y = date.getFullYear() + '-';
    const M = (date.getMonth() + 1 < 10 ? '0' + (date.getMonth() + 1) : date.getMonth() + 1) + '-';
    const D = (date.getDate() < 10 ? '0'+date.getDate() : date.getDate()) + '  ';
    const h = (date.getHours() < 10 ? '0'+date.getHours() : date.getHours()) + ':';
    const m = (date.getMinutes() <10 ? '0'+date.getMinutes() : date.getMinutes()) ;
    // const s = date.getSeconds(); // 秒
    const dateString = Y + M + D + h + m;
    // console.log('dateString', dateString); // > dateString 2021-07-06 14:23
    return dateString;
},