js获取本周，本月

本周

let date = new Date();
const start = new Date(
  date.getFullYear(),
  date.getMonth(),
  date.getDate() - date.getDay() + 1
);
const end = new Date(
  start.getFullYear(),
  start.getMonth(),
  start.getDate() + 6
);

本月

let date = new Date();
const start = new Date(date.getFullYear(), date.getMonth(), 1);
const end = new Date(
  date.getFullYear(),
  date.getMonth(),
  new Date(date.getFullYear(), date.getMonth() + 1, 0).getDate()
);