# Weekday Names

URL: https://caijiao.org/dayjs/customization/weekday-names
Source: docs/dayjs/customization/weekday-names.md
Description: 使用Day.js的updateLocale方法配置英文星期名称，设置为对应的星期几。

`Locale#weekdayjs` 应该是一个包含星期名称的数组。

这依赖 [UpdateLocale](/dayjs/plugin/update-locale) 插件，才能正常运行

```javascript
dayjs.extend(updateLocale);

dayjs.updateLocale("en", {
  weekdays: [
    "Sunday",
    "Monday",
    "Tuesday",
    "Wednesday",
    "Thursday",
    "Friday",
    "Saturday",
  ],
});
```