js获取小时前 几分钟前

//计算函数方法     
function todo_time(time) {
    if (!time) {
      return '';
    }
    var oDate = new Date();
    var newHaoMiao1 = oDate.getTime(); //当前时间,含有时分秒
    oDate.setHours(0);
    oDate.setMinutes(0);
    oDate.setSeconds(0);
    oDate.setMilliseconds(0);
    var newHaoMiao2 = oDate.getTime(); //当前时间,不含有时分秒
    var newTime = time.replace(new RegExp("-", "gm"), "/");
    var arrTime = time.substring(0, 11).replace(new RegExp("-", "gm"), "/");     //截取时间，不含有时分秒
    var showTime = time.substring(0, 11);
    var oldHaoMiao1 = new Date(newTime).getTime();   //含有时分秒的转化成毫秒
    var oldHaoMiao2 = new Date(arrTime).getTime();     //不含有时分秒的转化成毫秒
    var d1 = (newHaoMiao1 - oldHaoMiao1) / 1000;
    var d2 = (newHaoMiao2 - oldHaoMiao2) / 1000;
    var d_result = '';
    if (d2 > 0) {   //是几天前
      var d_days = parseInt(d2 / 86400);
      if (d_days === 1) {
        d_result = "昨天";
      } else if (d_days >= 2) {
        d_result = showTime;
      }
    } else {    //是今天
      var d_hours = parseInt(d1 / 3600);
      var d_minutes = parseInt(d1 / 60);
      if (d_hours > 0) {
        d_result = d_hours + "小时前";
      } else if (d_hours <= 0 && d_minutes > 0) {
        d_result = d_minutes + "分钟前";
      } else {
        d_result = "刚刚";
      }
    }
    return d_result;
        }

//调用
var txt=    todo_time('2022-04-30 9:19:59')