---
id: 587d824b367417b2b2512c4b
title: 用三个等号断言严格相等
challengeType: 2
forumTopicId: 301610
dashedName: use-the-triple-equals-to-assert-strict-equality
---

# --description--

请注意，本项目在[这个 Replit 项目](https://replit.com/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。

`strictEqual()` 使用 `===` 比较对象。

# --instructions--

在 `tests/1_unit-tests.js` 中，在 `Equality` 套件里标有 `#6` 的测试下，将每个 `assert` 改为 `assert.strictEqual` 或 `assert.notStrictEqual`，让测试通过（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=5').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：`strictEqual` 或 `notStrictEqual`。

```js
(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=5').then(
    (data) => {
      assert.equal(
        data.assertions[0].method,
        'notStrictEqual',
        'with strictEqual the type must match'
      );
    },
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );
```

应该为第二个断言选择正确的方法：`strictEqual` 或 `notStrictEqual`。

```js
(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=5').then(
    (data) => {
      assert.equal(data.assertions[1].method, 'strictEqual', '3*2 = 6...');
    },
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );
```

应该为第三个断言选择正确的方法：`strictEqual` 或 `notStrictEqual`。

```js
(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=5').then(
    (data) => {
      assert.equal(
        data.assertions[2].method,
        'strictEqual',
        "6 * '2' is 12. Types match !"
      );
    },
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );
```

应该为第四个断言选择正确的方法：`strictEqual` 或 `notStrictEqual`。

```js
(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=5').then(
    (data) => {
      assert.equal(
        data.assertions[3].method,
        'notStrictEqual',
        'Even if they have the same elements, the Arrays are notStrictEqual'
      );
    },
    (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.
*/
```