freeCodeCamp/test-if-an-object-is-an-instance-of-a-constructor.chinese.md at 61460c8601a1227201ffc809866da7c6cf83f733

Files

Oliver Eyton-Williams 61460c8601 fix: insert blank line after ```

search and replace ```\n< with ```\n\n< to ensure there's an empty line
before closing tags

2020-08-16 04:45:20 +05:30

2.3 KiB

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id, title, challengeType, videoUrl, localeTitle

id	title	challengeType	videoUrl	localeTitle
587d824e367417b2b2512c57	Test if an Object is an Instance of a Constructor	2		测试对象是否是构造函数的实例

Description

提醒一下，这个项目是基于Glitch的以下入门项目构建的，或者是从GitHub克隆的。 #instanceOf声明对象是构造函数的实例。在适当的地方使用#instanceOf或#notInstanceOf

Instructions

Tests

tests:
  - text: 所有测试都应该通过
    testString: getUserInput => $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=17').then(data => { assert.equal(data.state,'passed'); }, xhr => { throw new Error(xhr.responseText); })
  - text: 选择正确的断言 -  instanceOf与notInstanceOf
    testString: getUserInput => $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=17').then(data => { assert.equal(data.assertions[0].method, 'notInstanceOf', 'myCar is not an instance of Plane'); }, xhr => { throw new Error(xhr.responseText); })
  - text: 选择正确的断言 -  instanceOf与notInstanceOf
    testString: getUserInput => $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=17').then(data => { assert.equal(data.assertions[1].method, 'instanceOf', 'airlinePlane is an instance of Plane'); }, xhr => { throw new Error(xhr.responseText); })
  - text: 选择正确的断言 -  instanceOf与notInstanceOf
    testString: getUserInput => $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=17').then(data => { assert.equal(data.assertions[2].method, 'instanceOf', 'everything is an Object in JavaScript...'); }, xhr => { throw new Error(xhr.responseText); })
  - text: 选择正确的断言 -  instanceOf与notInstanceOf
    testString: getUserInput => $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=17').then(data => { assert.equal(data.assertions[3].method, 'notInstanceOf', 'myCar.wheels is not an instance of String'); }, xhr => { throw new Error(xhr.responseText); })

Challenge Seed

Solution

// solution required

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2.3 KiB Raw Blame History