# \_.clamp（求夹值）

**语法：**

```javascript
_.clamp(number, [lower], upper)
```

**源代码链接：**[source](https://github.com/lodash/lodash/blob/4.17.10/lodash.js#L13980)

**npm包链接：**[npm package](https://www.npmjs.com/package/lodash.clamp)

**描述：**

返回限制在`lower`和`upper`之间的值。

**开始版本：**4.0.0

**参数：**

* `number (number)`: 被限制的值。
* `[lower] (number)`: 下限。
* `upper (number)`: 上限。

> 个人理解觉得应该取一个上上限一个下限，然后取三个值的中间夹值。没用过

**返回值：**

* `(number)`: 返回被限制的值。

**例子：**

```javascript
_.clamp(-10, -5, 5);
// => -5

_.clamp(10, -5, 5);
// => 5
```


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