toLower
最后更新于：2022-04-02 00:07:38
## toLower
+ [link](./toLower "Link to this entry.")
+ [source](https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12773 "View in source.")
+ [npm](https://www.npmjs.com/package/lodash.tolower "See the npm package.")
```
_.toLower([string=''])
```
转换整体的字符串为小写
### 参数
1. [string=''] (string)
要转换的字符串
### 返回值 (string)
返回小写的字符串
### 示例
```
_.toLower('--Foo-Bar');
// => '--foo-bar'
_.toLower('fooBar');
// => 'foobar'
_.toLower('__FOO_BAR__');
// => '__foo_bar__'
```
';