---
id: 587d824d367417b2b2512c54
title: 使用正则表达式测试字符串
challengeType: 2
forumTopicId: 301608
dashedName: use-regular-expressions-to-test-a-string
---

# --description--

请注意，本项目在[这个 Repl.it 项目](https://repl.it/github/freeCodeCamp/boilerplate-mochachai)的基础上进行开发。你也可以从 [GitHub](https://repl.it/github/freeCodeCamp/boilerplate-mochachai) 上克隆。

`match()` 断言一个值匹配一个正则表达式（第二个参数）。

# --instructions--

在 `tests/1_unit-tests.js` 中，`Strings` 套件里标有 `#15` 的测试下，将每个 `assert` 改成 `assert.match` 或 `assert.notMatch` 方法，通过测试（结果应该返回 `true`）。 不要修改传给断言的参数。

# --hints--

应通过所有测试。

```js
(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=14').then(
    (data) => {
      assert.equal(data.state, 'passed');
    },
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );
```

应该为第一个断言选择正确的方法：`match` 或 `notMatch`。

```js
(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=14').then(
    (data) => {
      assert.equal(
        data.assertions[0].method,
        'match',
        "'# name:John Doe, age:35' matches the regex"
      );
    },
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );
```

应该为第二个断言选择正确的方法：`match` 或 `notMatch`。

```js
(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=14').then(
    (data) => {
      assert.equal(
        data.assertions[1].method,
        'notMatch',
        "'# name:Paul Smith III, age:twenty-four' does not match the regex (the age must be numeric)"
      );
    },
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );
```

# --solutions--

```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.
*/
```
