> For the complete documentation index, see [llms.txt](https://osl.mistium.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://osl.mistium.com/methods/strings/case.md).

# Case & Whitespace

Methods that change letter case or strip surrounding whitespace. None mutate the original string.

#### `.toUpper()` → `string`

Uppercases every letter.

```javascript
log "hello".toUpper()  // "HELLO"
```

#### `.toLower()` → `string`

Lowercases every letter.

```javascript
log "HELLO".toLower()  // "hello"
```

#### `.toTitle()` → `string`

Capitalises the first letter of each word.

```javascript
log "ada lovelace".toTitle()  // "Ada Lovelace"
```

#### `.trim()` → `string`

Removes leading and trailing whitespace.

```javascript
log "  hi  ".trim()  // "hi"
```

#### `.strip()` → `string`

Alias for `.trim()`.