freeCodeCamp/curriculum/challenges/chinese/10-coding-interview-prep/rosetta-code/date-format.md

---
id: 59669d08d75b60482359409f
title: 日期格式
challengeType: 5
videoUrl: ''
dashedName: date-format
---

# --description--

任务：

返回包含以下格式的当前日期的数组：

\- 2007-11-23和

\- 2007年11月23日星期日

示例输出： `['2007-11-23', 'Sunday, November 23, 2007']`

# --hints--

`getDateFormats`是一个函数。

```js
assert(typeof getDateFormats === 'function');
```

应该返回一个对象。

```js
assert(typeof getDateFormats() === 'object');
```

应该返回一个包含2个元素的数组。

```js
assert(getDateFormats().length === 2);
```

应以正​​确的格式返回正确的日期

```js
assert.deepEqual(getDateFormats(), dates, equalsMessage);
```

# --seed--

## --after-user-code--

```js
const getDateSolution = () => {
  const date = new Date();
  const weekdays = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'];
  const months = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'];
  const fmt1 = `${date.getFullYear()}-${(1 + date.getMonth())}-${date.getDate()}`;
  const fmt2 = `${weekdays[date.getDay()]}, ${months[date.getMonth()]} ${date.getDate()}, ${date.getFullYear()}`;
  return [fmt1, fmt2];
};

const dates = getDateSolution();
const equalsMessage = `message: <code>getDataFormats()</code> should return <code>["${dates[0]}", "${dates[1]}"]</code>.`;
```

## --seed-contents--

```js
function getDateFormats() {

  return true;
}
```

# --solutions--

```js
function getDateFormats() {
  const date = new Date();
  const weekdays = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'];
  const months = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'];
  const fmt1 = `${date.getFullYear()}-${(1 + date.getMonth())}-${date.getDate()}`;
  const fmt2 = `${weekdays[date.getDay()]}, ${months[date.getMonth()]} ${date.getDate()}, ${date.getFullYear()}`;
  return [fmt1, fmt2];
}
```