js获取当前一周,当月的日期

要获取当前一周的日期，可以使用以下代码：

function getDatesOfCurrentWeek() {
  const today = new Date();
  const currentDayOfWeek = today.getDay(); // 0 (Sunday) - 6 (Saturday)
  let startDate = new Date(today);
  let endDate = new Date(today);
 
  // 调整为星期日开始
  startDate.setDate(startDate.getDate() - (currentDayOfWeek - 1));
  endDate.setDate(endDate.getDate() + (7 - currentDayOfWeek));
 
  // 创建日期数组
  let dates = [];
  for (let i = 0; i < 7; i++) {
    dates.push(new Date(startDate));
    startDate.setDate(startDate.getDate() + 1);
  }
 
  return dates;
}
 
const datesOfCurrentWeek = getDatesOfCurrentWeek();
datesOfCurrentWeek.forEach(date => console.log(date.toLocaleDateString()));

要获取当前月份的日期，可以使用以下代码：

function getDatesOfCurrentMonth() {
  const today = new Date();
  const numberOfDaysInMonth = new Date(today.getFullYear(), today.getMonth() + 1, 0).getDate();
  let dates = [];
 
  for (let day = 1; day <= numberOfDaysInMonth; day++) {
    dates.push(new Date(today.getFullYear(), today.getMonth(), day));
  }
 
  return dates;
}
 
const datesOfCurrentMonth = getDatesOfCurrentMonth();
datesOfCurrentMonth.forEach(date => console.log(date.toLocaleDateString()));

这两个函数会返回一个日期数组，你可以通过toLocaleDateString()方法将日期格式化为易读的格式，也可以根据需要自定义格式化方法。