3.1 KiB

Raw Blame History

id	title	challengeType	videoUrl	forumTopicId	dashedName
5688e62ea601b2482ff8422b	资料查找	1	https://scrimba.com/c/cDqW2Cg	18259	profile-lookup

--description--

我们有一个对象数组，里面存储着通讯录。

lookUpProfile 函数已经写好了参数，需要 name 和属性 (prop) 参数。

函数将会检查通讯录中是否存在一个 firstName 与传入的 name 相同的联系人。如果存在，那么还需要检查对应的联系人中是否存在 prop 属性。

如果它们都存在，函数返回 prop 属性对应的值。

如果 name 不对应于任何联系人，然后返回字符串 No such contact。

如果 prop 属性在匹配 name 的联系人里不存在，返回 No such property。

--hints--

lookUpProfile("Kristian", "lastName") 应该返回字符串 Vos

assert(lookUpProfile('Kristian', 'lastName') === 'Vos');

lookUpProfile("Sherlock", "likes") 应该返回 ["Intriguing Cases", "Violin"]

assert.deepEqual(lookUpProfile('Sherlock', 'likes'), [
  'Intriguing Cases',
  'Violin'
]);

lookUpProfile("Harry", "likes") 应该返回一个数组

assert(typeof lookUpProfile('Harry', 'likes') === 'object');

lookUpProfile("Bob", "number") 应该返回字符串 No such contact

assert(lookUpProfile('Bob', 'number') === 'No such contact');

lookUpProfile("Bob", "potato") 应该返回字符串 No such contact

assert(lookUpProfile('Bob', 'potato') === 'No such contact');

lookUpProfile("Akira", "address") 应该返回字符串 No such property

assert(lookUpProfile('Akira', 'address') === 'No such property');

--seed--

--seed-contents--

// Setup
const contacts = [
  {
    firstName: "Akira",
    lastName: "Laine",
    number: "0543236543",
    likes: ["Pizza", "Coding", "Brownie Points"],
  },
  {
    firstName: "Harry",
    lastName: "Potter",
    number: "0994372684",
    likes: ["Hogwarts", "Magic", "Hagrid"],
  },
  {
    firstName: "Sherlock",
    lastName: "Holmes",
    number: "0487345643",
    likes: ["Intriguing Cases", "Violin"],
  },
  {
    firstName: "Kristian",
    lastName: "Vos",
    number: "unknown",
    likes: ["JavaScript", "Gaming", "Foxes"],
  },
];

function lookUpProfile(name, prop) {
  // Only change code below this line

  // Only change code above this line
}

lookUpProfile("Akira", "likes");

--solutions--

const contacts = [
  {
    firstName: "Akira",
    lastName: "Laine",
    number: "0543236543",
    likes: ["Pizza", "Coding", "Brownie Points"],
  },
  {
    firstName: "Harry",
    lastName: "Potter",
    number: "0994372684",
    likes: ["Hogwarts", "Magic", "Hagrid"],
  },
  {
    firstName: "Sherlock",
    lastName: "Holmes",
    number: "0487345643",
    likes: ["Intriguing Cases", "Violin"],
  },
  {
    firstName: "Kristian",
    lastName: "Vos",
    number: "unknown",
    likes: ["JavaScript", "Gaming", "Foxes"],
  },
];
function lookUpProfile(name, prop) {
  for (let i in contacts) {
    if (contacts[i].firstName === name) {
      return contacts[i][prop] || "No such property";
    }
  }
  return "No such contact";
}

3.1 KiB Raw Blame History