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# \_.upperFirst（仅首字母大写其他不变）

**语法：**

```javascript
_.upperFirst([string=''])
```

**源代码链接：**[source](https://github.com/lodash/lodash/blob/4.17.10/lodash.js#L15191)

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

**描述：**

转换字符串`string`的首字母为大写。

**开始版本：**4.0.0

**参数：**

* `[string=''] (string)`: 要转换的字符串。

**返回值：**

* `(string)`: 返回转换后的字符串。

**例子：**

```javascript
_.upperFirst('fred');
// => 'Fred'

_.upperFirst('FRED');
// => 'FRED'
```