从推文（字符串）返回某些数据的函数

Question

我已经写了下面的功能，该功能采用一个参数（字符串）并从中提取某些数据。

function getTweetData(tweet) {


const newObject = {
    tags: [],
    mentions: [],
    tagCount: 0,
    mentionCount: 0,
    length: 0,
  };

  //length
  newObject.length = tweet.length;

  const findMention = tweet.split("@").length - 1;
  newObject.mentionCount = findMention;
  const atRegex = tweet.match(/@(.[a-z0-9]+)/g);
  newObject.mentions = atRegex === null ? [] : atRegex;

  const findHashtag = tweet.split("#").length - 1;
  newObject.tagCount = findHashtag;
  const regex = tweet.match(/#(.[a-z0-9]+)/g);
  newObject.tags = regex === null ? [] : regex;

  //need to put the above two together


  console.log(newObject);
  return newObject;
}

该代码采用一个字符串，并尝试提取字符数量， @的数量和＃的数量。然后，应将 @和＃内容输入相应的数组（以const newObject）输入。

上面的代码适用于包含 @或＃但不包含两者的字符串的字符串。

关于如何结合两者的任何想法。

我写的测试在下面，除了最后一个测试。

    const getTweetData = require("../get-tweet-data");

describe("Name of the group", () => {
  test("should return return empty object", () => {
    expect(typeof getTweetData(" ")).toBe("object");
  });
  test("should return length of character tweets", () => {
    expect(getTweetData("tweet")).toEqual({
      tags: [],
      mentions: [],
      tagCount: 0,
      mentionCount: 0,
      length: 5,
    });
  });
  test("should return amount of hashtags mentioned in tweet", () => {
    expect(getTweetData("tweet #coding")).toEqual({
      tags: ["#coding"],
      mentions: [],
      tagCount: 1,
      mentionCount: 0,
      length: 13,
    });
  });
  test("should return amount of @mentions mentioned in tweet", () => {
    expect(getTweetData("tweet @coders")).toEqual({
      tags: [],
      mentions: ["@coders"],
      tagCount: 0,
      mentionCount: 1,
      length: 18,
    });
  });
  test("should return amount of @mentions and #hashtags mentioned in tweet", () => {
    expect("Hello @stackoverflow #coding #needhelp").toEqual({
      tags: ["#coding", "#needhelp"],
      mentions: ["@stackoverflow"],
      tagCount: 2,
      mentionCount: 1,
      length: 38,
    });
  });
});

Answer 1

您的功能似乎有效。

这是我们在字符串上调用getTweetData时获得的输出：
“ hello @stackoverflow #coding #needhelp”

{
  tags: [ '#coding', '#needhelp' ],
  mentions: [ '@stackoverflow' ],
  tagCount: 2,
  mentionCount: 1,
  length: 38
}

编辑：您上次测试存在错误：您应该致电：

期望（getTweetData（“ hello @stackoverflow #coding #coding #coding #needhelp”））。 to equal（{...

而不是期望（“ hello @stackoverflow #coding #needhelp”）。toequal（{...）