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											2019-05-06 07:31:26 -04:00
										 |  |  |  | --- | 
					
						
							|  |  |  |  | id: bd7158d8c443edefaeb5bdef | 
					
						
							| 
									
										
										
										
											2021-02-16 13:01:20 -08:00
										 |  |  |  | title: 时间戳微服务 | 
					
						
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											2019-05-06 07:31:26 -04:00
										 |  |  |  | challengeType: 4 | 
					
						
							| 
									
										
										
										
											2020-09-18 00:11:18 +08:00
										 |  |  |  | forumTopicId: 301508 | 
					
						
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											2021-01-13 03:31:00 +01:00
										 |  |  |  | dashedName: timestamp-microservice | 
					
						
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											2019-05-06 07:31:26 -04:00
										 |  |  |  | --- | 
					
						
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											2020-12-16 00:37:30 -07:00
										 |  |  |  | # --description--
 | 
					
						
							|  |  |  |  | 
 | 
					
						
							| 
									
										
										
										
											2021-09-18 11:22:53 -07:00
										 |  |  |  | 构建一个 JavaScript 的全栈应用,在功能上与这个应用相似:<https://timestamp-microservice.freecodecamp.rocks/>。 在这个项目中,你将使用以下方法之一编写你的代码: | 
					
						
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											2020-12-16 00:37:30 -07:00
										 |  |  |  | 
 | 
					
						
							| 
									
										
										
										
											2021-09-18 11:22:53 -07:00
										 |  |  |  | -   克隆 [这个 GitHub 仓库](https://github.com/freeCodeCamp/boilerplate-project-timestamp/) 并在本地完成项目。 | 
					
						
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											2021-05-12 21:25:58 +05:30
										 |  |  |  | -   使用[我们的 Replit 初始化项目](https://replit.com/github/freeCodeCamp/boilerplate-project-timestamp)来完成你的项目。 | 
					
						
							| 
									
										
										
										
											2021-09-18 11:22:53 -07:00
										 |  |  |  | -   使用你选择的网站生成器来完成项目。 需要包含我们 GitHub 仓库的所有文件。 | 
					
						
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											2020-12-16 00:37:30 -07:00
										 |  |  |  | 
 | 
					
						
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											2021-09-18 11:22:53 -07:00
										 |  |  |  | 完成本项目后,请将一个正常运行的 demo(项目演示)托管在可以公开访问的平台。 然后在 `Solution Link` 字段中提交它的 URL。 此外,还可以将项目的源码提交到 `GitHub Link` 中。 | 
					
						
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											2020-12-16 00:37:30 -07:00
										 |  |  |  | 
 | 
					
						
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											2021-12-18 20:00:08 +05:30
										 |  |  |  | **注意:** 时区转换不是本项目的目的,因此假设所有发送的有效日期将使用 `new Date()` 解析为 GMT 日期。 | 
					
						
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 | 
					
						
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											2020-12-16 00:37:30 -07:00
										 |  |  |  | # --hints--
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							|  |  |  |  | 
 | 
					
						
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											2021-02-16 13:01:20 -08:00
										 |  |  |  | 提交自己的项目,而不是示例的 URL。 | 
					
						
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											2021-02-06 04:42:36 +00:00
										 |  |  |  | 
 | 
					
						
							|  |  |  |  | ```js | 
					
						
							|  |  |  |  | (getUserInput) => { | 
					
						
							|  |  |  |  |   assert( | 
					
						
							|  |  |  |  |     !/.*\/timestamp-microservice\.freecodecamp\.rocks/.test(getUserInput('url')) | 
					
						
							|  |  |  |  |   ); | 
					
						
							|  |  |  |  | }; | 
					
						
							|  |  |  |  | ``` | 
					
						
							|  |  |  |  | 
 | 
					
						
							| 
									
										
										
										
											2021-12-18 20:00:08 +05:30
										 |  |  |  | 对具有有效日期的 `/api/:date?` 的请求应返回一个带有 `unix` 键的 JSON 对象,该键是输入日期的 Unix 时间戳(以毫秒为单位) | 
					
						
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											2020-12-16 00:37:30 -07:00
										 |  |  |  | 
 | 
					
						
							|  |  |  |  | ```js | 
					
						
							|  |  |  |  | (getUserInput) => | 
					
						
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											2021-05-12 21:25:58 +05:30
										 |  |  |  |   $.get(getUserInput('url') + '/api/2016-12-25').then( | 
					
						
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										 |  |  |  |     (data) => { | 
					
						
							|  |  |  |  |       assert.equal( | 
					
						
							|  |  |  |  |         data.unix, | 
					
						
							|  |  |  |  |         1482624000000, | 
					
						
							|  |  |  |  |         'Should be a valid unix timestamp' | 
					
						
							|  |  |  |  |       ); | 
					
						
							|  |  |  |  |     }, | 
					
						
							|  |  |  |  |     (xhr) => { | 
					
						
							|  |  |  |  |       throw new Error(xhr.responseText); | 
					
						
							|  |  |  |  |     } | 
					
						
							|  |  |  |  |   ); | 
					
						
							|  |  |  |  | ``` | 
					
						
							|  |  |  |  | 
 | 
					
						
							| 
									
										
										
										
											2021-12-18 20:00:08 +05:30
										 |  |  |  | 对具有有效日期的 `/api/:date?` 的请求应返回一个带有 `utc` 键的 JSON 对象,该键是输入日期的字符串,格式为:`Thu, 01 Jan 1970 00:00:00 GMT` | 
					
						
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											2019-05-06 07:31:26 -04:00
										 |  |  |  | 
 | 
					
						
							| 
									
										
										
										
											2020-12-16 00:37:30 -07:00
										 |  |  |  | ```js | 
					
						
							|  |  |  |  | (getUserInput) => | 
					
						
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											2021-05-12 21:25:58 +05:30
										 |  |  |  |   $.get(getUserInput('url') + '/api/2016-12-25').then( | 
					
						
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											2020-12-16 00:37:30 -07:00
										 |  |  |  |     (data) => { | 
					
						
							|  |  |  |  |       assert.equal( | 
					
						
							|  |  |  |  |         data.utc, | 
					
						
							|  |  |  |  |         'Sun, 25 Dec 2016 00:00:00 GMT', | 
					
						
							|  |  |  |  |         'Should be a valid UTC date string' | 
					
						
							|  |  |  |  |       ); | 
					
						
							|  |  |  |  |     }, | 
					
						
							|  |  |  |  |     (xhr) => { | 
					
						
							|  |  |  |  |       throw new Error(xhr.responseText); | 
					
						
							|  |  |  |  |     } | 
					
						
							|  |  |  |  |   ); | 
					
						
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											2019-05-06 07:31:26 -04:00
										 |  |  |  | ``` | 
					
						
							|  |  |  |  | 
 | 
					
						
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											2021-12-18 20:00:08 +05:30
										 |  |  |  | 对 `/api/1451001600000` 的请求应该返回 `{ unix: 1451001600000, utc: "Fri, 25 Dec 2015 00:00:00 GMT" }` | 
					
						
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											2021-02-06 04:42:36 +00:00
										 |  |  |  | 
 | 
					
						
							|  |  |  |  | ```js | 
					
						
							|  |  |  |  | (getUserInput) => | 
					
						
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											2021-05-12 21:25:58 +05:30
										 |  |  |  |   $.get(getUserInput('url') + '/api/1451001600000').then( | 
					
						
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											2021-02-06 04:42:36 +00:00
										 |  |  |  |     (data) => { | 
					
						
							|  |  |  |  |       assert( | 
					
						
							|  |  |  |  |         data.unix === 1451001600000 && | 
					
						
							|  |  |  |  |           data.utc === 'Fri, 25 Dec 2015 00:00:00 GMT' | 
					
						
							|  |  |  |  |       ); | 
					
						
							|  |  |  |  |     }, | 
					
						
							|  |  |  |  |     (xhr) => { | 
					
						
							|  |  |  |  |       throw new Error(xhr.responseText); | 
					
						
							|  |  |  |  |     } | 
					
						
							|  |  |  |  |   ); | 
					
						
							|  |  |  |  | ``` | 
					
						
							|  |  |  |  | 
 | 
					
						
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											2021-12-18 20:00:08 +05:30
										 |  |  |  | 你的项目可以处理可以通过 `new Date(date_string)` 成功解析的日期 | 
					
						
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											2020-12-16 00:37:30 -07:00
										 |  |  |  | 
 | 
					
						
							|  |  |  |  | ```js | 
					
						
							|  |  |  |  | (getUserInput) => | 
					
						
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											2021-12-18 20:00:08 +05:30
										 |  |  |  |   $.get(getUserInput('url') + '/api/05 October 2011, GMT').then( | 
					
						
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											2020-12-16 00:37:30 -07:00
										 |  |  |  |     (data) => { | 
					
						
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											2021-02-06 04:42:36 +00:00
										 |  |  |  |       assert( | 
					
						
							|  |  |  |  |         data.unix === 1317772800000 && | 
					
						
							|  |  |  |  |           data.utc === 'Wed, 05 Oct 2011 00:00:00 GMT' | 
					
						
							|  |  |  |  |       ); | 
					
						
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											2020-12-16 00:37:30 -07:00
										 |  |  |  |     }, | 
					
						
							|  |  |  |  |     (xhr) => { | 
					
						
							|  |  |  |  |       throw new Error(xhr.responseText); | 
					
						
							|  |  |  |  |     } | 
					
						
							|  |  |  |  |   ); | 
					
						
							|  |  |  |  | ``` | 
					
						
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											2019-05-06 07:31:26 -04:00
										 |  |  |  | 
 | 
					
						
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											2021-12-18 20:00:08 +05:30
										 |  |  |  | 如果输入的日期字符串无效,api 将返回一个具有结构的对象 `{ error : "Invalid Date" }` | 
					
						
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											2019-05-06 07:31:26 -04:00
										 |  |  |  | 
 | 
					
						
							| 
									
										
										
										
											2020-12-16 00:37:30 -07:00
										 |  |  |  | ```js | 
					
						
							|  |  |  |  | (getUserInput) => | 
					
						
							| 
									
										
										
										
											2021-05-12 21:25:58 +05:30
										 |  |  |  |   $.get(getUserInput('url') + '/api/this-is-not-a-date').then( | 
					
						
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											2020-12-16 00:37:30 -07:00
										 |  |  |  |     (data) => { | 
					
						
							|  |  |  |  |       assert.equal(data.error.toLowerCase(), 'invalid date'); | 
					
						
							|  |  |  |  |     }, | 
					
						
							|  |  |  |  |     (xhr) => { | 
					
						
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											2021-06-07 00:19:07 +09:00
										 |  |  |  |       assert(xhr.responseJSON.error.toLowerCase() === 'invalid date'); | 
					
						
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											2020-12-16 00:37:30 -07:00
										 |  |  |  |     } | 
					
						
							|  |  |  |  |   ); | 
					
						
							|  |  |  |  | ``` | 
					
						
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											2019-05-06 07:31:26 -04:00
										 |  |  |  | 
 | 
					
						
							| 
									
										
										
										
											2021-12-18 20:00:08 +05:30
										 |  |  |  | 一个空的日期参数应该返回一个带有 `unix` 键的 JSON 对象中的当前时间 | 
					
						
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											2019-05-06 07:31:26 -04:00
										 |  |  |  | 
 | 
					
						
							|  |  |  |  | ```js | 
					
						
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											2020-12-16 00:37:30 -07:00
										 |  |  |  | (getUserInput) => | 
					
						
							| 
									
										
										
										
											2021-05-12 21:25:58 +05:30
										 |  |  |  |   $.get(getUserInput('url') + '/api').then( | 
					
						
							| 
									
										
										
										
											2020-12-16 00:37:30 -07:00
										 |  |  |  |     (data) => { | 
					
						
							|  |  |  |  |       var now = Date.now(); | 
					
						
							|  |  |  |  |       assert.approximately(data.unix, now, 20000); | 
					
						
							|  |  |  |  |     }, | 
					
						
							|  |  |  |  |     (xhr) => { | 
					
						
							|  |  |  |  |       throw new Error(xhr.responseText); | 
					
						
							|  |  |  |  |     } | 
					
						
							|  |  |  |  |   ); | 
					
						
							| 
									
										
										
										
											2019-05-06 07:31:26 -04:00
										 |  |  |  | ``` | 
					
						
							| 
									
										
										
										
											2020-08-13 17:24:35 +02:00
										 |  |  |  | 
 | 
					
						
							| 
									
										
										
										
											2021-12-18 20:00:08 +05:30
										 |  |  |  | 空日期参数应返回带有 `utc` 键的 JSON 对象中的当前时间 | 
					
						
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											2020-12-16 00:37:30 -07:00
										 |  |  |  | 
 | 
					
						
							|  |  |  |  | ```js | 
					
						
							|  |  |  |  | (getUserInput) => | 
					
						
							| 
									
										
										
										
											2021-05-12 21:25:58 +05:30
										 |  |  |  |   $.get(getUserInput('url') + '/api').then( | 
					
						
							| 
									
										
										
										
											2020-12-16 00:37:30 -07:00
										 |  |  |  |     (data) => { | 
					
						
							|  |  |  |  |       var now = Date.now(); | 
					
						
							|  |  |  |  |       var serverTime = new Date(data.utc).getTime(); | 
					
						
							|  |  |  |  |       assert.approximately(serverTime, now, 20000); | 
					
						
							|  |  |  |  |     }, | 
					
						
							|  |  |  |  |     (xhr) => { | 
					
						
							|  |  |  |  |       throw new Error(xhr.responseText); | 
					
						
							|  |  |  |  |     } | 
					
						
							|  |  |  |  |   ); | 
					
						
							|  |  |  |  | ``` | 
					
						
							|  |  |  |  | 
 | 
					
						
							|  |  |  |  | # --solutions--
 | 
					
						
							|  |  |  |  | 
 | 
					
						
							| 
									
										
										
										
											2021-01-13 03:31:00 +01:00
										 |  |  |  | ```js | 
					
						
							|  |  |  |  | /** | 
					
						
							|  |  |  |  |   Backend challenges don't need solutions,  | 
					
						
							|  |  |  |  |   because they would need to be tested against a full working project.  | 
					
						
							|  |  |  |  |   Please check our contributing guidelines to learn more. | 
					
						
							|  |  |  |  | */ | 
					
						
							|  |  |  |  | ``` |