2021-05-05 10:13:49 -07:00
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---
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id: 5a8b073d06fa14fcfde687aa
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title: Exercise 追蹤器
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challengeType: 4
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forumTopicId: 301505
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dashedName: exercise-tracker
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---
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# --description--
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構建一個 JavaScript 的全棧應用,在功能上與這個應用相似: <https://exercise-tracker.freecodecamp.rocks/>。 可以採用下面的一種方式完成這個挑戰:
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- 克隆 [GitHub 倉庫](https://github.com/freeCodeCamp/boilerplate-project-exercisetracker/) 並在本地完成你的項目。
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2021-05-12 21:25:58 +05:30
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- 使用[我們的 Replit 初始化項目](https://replit.com/github/freeCodeCamp/boilerplate-project-exercisetracker)來完成你的項目。
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2021-05-05 10:13:49 -07:00
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- 使用你選擇的網站生成器來完成項目, 並確保包含了我們 GitHub 倉庫的所有文件。
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當完成本項目,請確認有一個正常運行的 demo 可以公開訪問。 然後將 URL 提交到 `Solution Link` 中。 此外,還可以將項目的源碼提交到 `GitHub Link` 中。
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# --hints--
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提交自己的項目,而不是示例的 URL。
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```js
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(getUserInput) => {
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const url = getUserInput('url');
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assert(
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!/.*\/exercise-tracker\.freecodecamp\.rocks/.test(getUserInput('url'))
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);
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};
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```
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2021-05-12 21:25:58 +05:30
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可以將表單裏的 `username` 通過 `POST` 請求發送到 `/api/users`,以創建一個新的用戶。 返回的響應內容是一個帶有 `username` 和 `_id` 的對象
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2021-05-05 10:13:49 -07:00
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```js
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async (getUserInput) => {
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const url = getUserInput('url');
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2021-05-12 21:25:58 +05:30
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const res = await fetch(url + '/api/users', {
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2021-05-05 10:13:49 -07:00
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method: 'POST',
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headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
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body: `username=fcc_test_${Date.now()}`.substr(0, 29)
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});
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if (res.ok) {
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const { _id, username } = await res.json();
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assert.exists(_id);
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assert.exists(username);
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} else {
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throw new Error(`${res.status} ${res.statusText}`);
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}
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};
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```
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2021-05-12 21:25:58 +05:30
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可以發送 `GET` 請求到 `/api/users`,以獲取一個所有用戶的數組, 數組裏的每個元素都是一個包含 `username` 和 `_id` 的用戶對象。
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2021-05-05 10:13:49 -07:00
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```js
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async (getUserInput) => {
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const url = getUserInput('url');
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const res = await fetch(url + '/api/users');
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if (res.ok) {
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const data = await res.json();
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assert.isArray(data);
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assert.isString(data[0].username);
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assert.isString(data[0]._id);
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} else {
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throw new Error(`${res.status} ${res.statusText}`);
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}
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};
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```
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2021-05-12 21:25:58 +05:30
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你能用表單裏的 `description`、`duration` 和 `date`(可選)發送 `POST` 請求到 `/api/users/:_id/exercises`。 如果沒有傳入 date,默認採用當前日期。 響應內容是包含 exercise 表單內容的 user 對象。
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2021-05-05 10:13:49 -07:00
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```js
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async (getUserInput) => {
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const url = getUserInput('url');
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const res = await fetch(url + '/api/users', {
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2021-05-05 10:13:49 -07:00
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method: 'POST',
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headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
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body: `username=fcc_test_${Date.now()}`.substr(0, 29)
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});
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if (res.ok) {
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const { _id, username } = await res.json();
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const expected = {
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username,
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description: 'test',
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duration: 60,
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_id,
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date: 'Mon Jan 01 1990'
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};
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const addRes = await fetch(url + `/api/users/${_id}/exercises`, {
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method: 'POST',
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headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
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body: `description=${expected.description}&duration=${expected.duration}&date=1990-01-01`
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});
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if (addRes.ok) {
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const actual = await addRes.json();
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assert.deepEqual(actual, expected);
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} else {
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throw new Error(`${addRes.status} ${addRes.statusText}`);
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}
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} else {
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throw new Error(`${res.status} ${res.statusText}`);
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}
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};
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```
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2021-05-12 21:25:58 +05:30
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可以發送 `GET` 請求到 `/api/users/:_id/logs`,以獲取任何用戶的完整 exercise 日誌。 響應內容是一個 user 對象,它帶有一個 `log` 屬性,該屬性的值是所有被添加的 exercises 表單記錄組成的數組, 每一個 log 數組裏的元素應該是一個含有 `description`、`duration` 和 `date` 等屬性的對象。
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```js
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async (getUserInput) => {
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const url = getUserInput('url');
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const res = await fetch(url + '/api/users', {
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method: 'POST',
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headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
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body: `username=fcc_test_${Date.now()}`.substr(0, 29)
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});
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if (res.ok) {
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const { _id, username } = await res.json();
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const expected = {
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username,
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description: 'test',
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duration: 60,
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_id,
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date: new Date().toDateString()
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};
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const addRes = await fetch(url + `/api/users/${_id}/exercises`, {
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method: 'POST',
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headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
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body: `description=${expected.description}&duration=${expected.duration}`
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});
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if (addRes.ok) {
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const logRes = await fetch(url + `/api/users/${_id}/logs`);
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if (logRes.ok) {
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const { log } = await logRes.json();
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assert.isArray(log);
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assert.equal(1, log.length);
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} else {
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throw new Error(`${logRes.status} ${logRes.statusText}`);
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}
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} else {
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throw new Error(`${addRes.status} ${addRes.statusText}`);
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}
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} else {
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throw new Error(`${res.status} ${res.statusText}`);
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}
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};
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```
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2021-05-12 21:25:58 +05:30
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用戶日誌請求(`/api/users/:_id/logs`)返回一個帶有 `count` 屬性的對象,該屬性反映 exercises 表單的成功提交次數(譯者注:即 log 屬性元素的個數)。
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2021-05-05 10:13:49 -07:00
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```js
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async (getUserInput) => {
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const url = getUserInput('url');
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2021-05-12 21:25:58 +05:30
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const res = await fetch(url + '/api/users', {
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method: 'POST',
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headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
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body: `username=fcc_test_${Date.now()}`.substr(0, 29)
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});
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if (res.ok) {
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const { _id, username } = await res.json();
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const expected = {
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username,
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description: 'test',
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duration: 60,
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_id,
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date: new Date().toDateString()
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};
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const addRes = await fetch(url + `/api/users/${_id}/exercises`, {
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method: 'POST',
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headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
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body: `description=${expected.description}&duration=${expected.duration}`
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});
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if (addRes.ok) {
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const logRes = await fetch(url + `/api/users/${_id}/logs`);
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if (logRes.ok) {
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const { count } = await logRes.json();
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assert(count);
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} else {
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throw new Error(`${logRes.status} ${logRes.statusText}`);
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}
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} else {
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throw new Error(`${addRes.status} ${addRes.statusText}`);
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}
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} else {
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throw new Error(`${res.status} ${res.statusText}`);
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}
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};
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```
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2021-05-12 21:25:58 +05:30
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可以把 `from`、`to` 和 `limit` 參數添加到一個 `/api/users/:_id/logs` 請求,以查詢該用戶的部分 exercise 表單提交記錄, `from` 和 `to` 是 `yyyy-mm-dd` 形式的日期, `limit` 是希望返回的 log 數量。
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```js
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async (getUserInput) => {
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const url = getUserInput('url');
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const res = await fetch(url + '/api/users', {
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method: 'POST',
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headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
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body: `username=fcc_test_${Date.now()}`.substr(0, 29)
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});
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if (res.ok) {
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const { _id, username } = await res.json();
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const expected = {
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username,
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description: 'test',
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duration: 60,
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_id,
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date: new Date().toDateString()
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};
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const addExerciseRes = await fetch(url + `/api/users/${_id}/exercises`, {
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method: 'POST',
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headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
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body: `description=${expected.description}&duration=${expected.duration}&date=1990-01-01`
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});
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const addExerciseTwoRes = await fetch(url + `/api/users/${_id}/exercises`, {
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method: 'POST',
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headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
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body: `description=${expected.description}&duration=${expected.duration}&date=1990-01-02`
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});
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if (addExerciseRes.ok && addExerciseTwoRes.ok) {
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const logRes = await fetch(
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url + `/api/users/${_id}/logs?from=1989-12-31&to=1990-01-03`
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);
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if (logRes.ok) {
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const { log } = await logRes.json();
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assert.isArray(log);
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assert.equal(2, log.length);
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} else {
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throw new Error(`${logRes.status} ${logRes.statusText}`);
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}
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const limitRes = await fetch(
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url + `/api/users/${_id}/logs?limit=1`
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);
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if (limitRes.ok) {
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const { log } = await limitRes.json();
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assert.isArray(log);
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assert.equal(1, log.length);
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} else {
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throw new Error(`${limitRes.status} ${limitRes.statusText}`);
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}
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} else {
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throw new Error(`${res.status} ${res.statusText}`);
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}
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} else {
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throw new Error(`${res.status} ${res.statusText}`);
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}
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};
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```
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# --solutions--
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```js
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/**
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Backend challenges don't need solutions,
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because they would need to be tested against a full working project.
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Please check our contributing guidelines to learn more.
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*/
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```
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