如何在angular2中获取24小时格式的两个时间之间的时间差

// 导入必要的模块
import { Component } from '@angular/core';

@Component({
  selector: 'app-time-difference',
  template: `
    <div>
      <label for="start">开始时间：</label>
      <input type="time" id="start" [(ngModel)]="startTime">
      <br>
      <label for="end">结束时间：</label>
      <input type="time" id="end" [(ngModel)]="endTime">
      <br>
      <button (click)="calculateTimeDifference()">计算时间差</button>
      <br>
      <p *ngIf="timeDifference">时间差为：{{ timeDifference }}</p>
    </div>
  `
})
export class TimeDifferenceComponent {
  startTime: string;
  endTime: string;
  timeDifference: string;

  calculateTimeDifference() {
    const start = new Date();
    const end = new Date();
    const [startHour, startMinute] = this.startTime.split(':');
    const [endHour, endMinute] = this.endTime.split(':');

    start.setHours(Number(startHour), Number(startMinute));
    end.setHours(Number(endHour), Number(endMinute));

    const diff = end.getTime() - start.getTime();
    const hours = Math.floor(diff / (1000 * 60 * 60));
    const minutes = Math.floor((diff % (1000 * 60 * 60)) / (1000 * 60));

    this.timeDifference = `${hours}小时${minutes}分钟`;
  }
}