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196 lines
10 KiB
Markdown
196 lines
10 KiB
Markdown
---
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id: class-keyboard
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title: "Keyboard"
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---
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Keyboard provides an api for managing a virtual keyboard. The high level api is [keyboard.type(text[, options])](api/class-keyboard.md#keyboardtypetext-options), which takes raw characters and generates proper keydown, keypress/input, and keyup events on your page.
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For finer control, you can use [keyboard.down(key)](api/class-keyboard.md#keyboarddownkey), [keyboard.up(key)](api/class-keyboard.md#keyboardupkey), and [keyboard.insertText(text)](api/class-keyboard.md#keyboardinserttexttext) to manually fire events as if they were generated from a real keyboard.
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An example of holding down `Shift` in order to select and delete some text:
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```js
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await page.keyboard.type('Hello World!');
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await page.keyboard.press('ArrowLeft');
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await page.keyboard.down('Shift');
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for (let i = 0; i < ' World'.length; i++)
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await page.keyboard.press('ArrowLeft');
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await page.keyboard.up('Shift');
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await page.keyboard.press('Backspace');
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// Result text will end up saying 'Hello!'
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```
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An example of pressing uppercase `A`
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```js
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await page.keyboard.press('Shift+KeyA');
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// or
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await page.keyboard.press('Shift+A');
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```
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An example to trigger select-all with the keyboard
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```js
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// on Windows and Linux
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await page.keyboard.press('Control+A');
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// on macOS
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await page.keyboard.press('Meta+A');
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```
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- [keyboard.down(key)](api/class-keyboard.md#keyboarddownkey)
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- [keyboard.insertText(text)](api/class-keyboard.md#keyboardinserttexttext)
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- [keyboard.press(key[, options])](api/class-keyboard.md#keyboardpresskey-options)
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- [keyboard.type(text[, options])](api/class-keyboard.md#keyboardtypetext-options)
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- [keyboard.up(key)](api/class-keyboard.md#keyboardupkey)
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## keyboard.down(key)
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- `key` <[string]> Name of the key to press or a character to generate, such as `ArrowLeft` or `a`.
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- returns: <[Promise]>
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Dispatches a `keydown` event.
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`key` can specify the intended [keyboardEvent.key](https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/key) value or a single character to generate the text for. A superset of the `key` values can be found [here](https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/key/Key_Values). Examples of the keys are:
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`F1` - `F12`, `Digit0`- `Digit9`, `KeyA`- `KeyZ`, `Backquote`, `Minus`, `Equal`, `Backslash`, `Backspace`, `Tab`, `Delete`, `Escape`, `ArrowDown`, `End`, `Enter`, `Home`, `Insert`, `PageDown`, `PageUp`, `ArrowRight`, `ArrowUp`, etc.
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Following modification shortcuts are also supported: `Shift`, `Control`, `Alt`, `Meta`, `ShiftLeft`.
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Holding down `Shift` will type the text that corresponds to the `key` in the upper case.
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If `key` is a single character, it is case-sensitive, so the values `a` and `A` will generate different respective texts.
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If `key` is a modifier key, `Shift`, `Meta`, `Control`, or `Alt`, subsequent key presses will be sent with that modifier active. To release the modifier key, use [keyboard.up(key)](api/class-keyboard.md#keyboardupkey).
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After the key is pressed once, subsequent calls to [keyboard.down(key)](api/class-keyboard.md#keyboarddownkey) will have [repeat](https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/repeat) set to true. To release the key, use [keyboard.up(key)](api/class-keyboard.md#keyboardupkey).
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> **NOTE** Modifier keys DO influence `keyboard.down`. Holding down `Shift` will type the text in upper case.
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## keyboard.insertText(text)
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- `text` <[string]> Sets input to the specified text value.
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- returns: <[Promise]>
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Dispatches only `input` event, does not emit the `keydown`, `keyup` or `keypress` events.
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```js
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page.keyboard.insertText('嗨');
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```
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> **NOTE** Modifier keys DO NOT effect `keyboard.insertText`. Holding down `Shift` will not type the text in upper case.
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## keyboard.press(key[, options])
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- `key` <[string]> Name of the key to press or a character to generate, such as `ArrowLeft` or `a`.
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- `options` <[Object]>
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- `delay` <[number]> Time to wait between `keydown` and `keyup` in milliseconds. Defaults to 0.
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- returns: <[Promise]>
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`key` can specify the intended [keyboardEvent.key](https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/key) value or a single character to generate the text for. A superset of the `key` values can be found [here](https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/key/Key_Values). Examples of the keys are:
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`F1` - `F12`, `Digit0`- `Digit9`, `KeyA`- `KeyZ`, `Backquote`, `Minus`, `Equal`, `Backslash`, `Backspace`, `Tab`, `Delete`, `Escape`, `ArrowDown`, `End`, `Enter`, `Home`, `Insert`, `PageDown`, `PageUp`, `ArrowRight`, `ArrowUp`, etc.
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Following modification shortcuts are also supported: `Shift`, `Control`, `Alt`, `Meta`, `ShiftLeft`.
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Holding down `Shift` will type the text that corresponds to the `key` in the upper case.
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If `key` is a single character, it is case-sensitive, so the values `a` and `A` will generate different respective texts.
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Shortcuts such as `key: "Control+o"` or `key: "Control+Shift+T"` are supported as well. When speficied with the modifier, modifier is pressed and being held while the subsequent key is being pressed.
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```js
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const page = await browser.newPage();
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await page.goto('https://keycode.info');
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await page.keyboard.press('A');
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await page.screenshot({ path: 'A.png' });
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await page.keyboard.press('ArrowLeft');
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await page.screenshot({ path: 'ArrowLeft.png' });
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await page.keyboard.press('Shift+O');
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await page.screenshot({ path: 'O.png' });
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await browser.close();
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```
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Shortcut for [keyboard.down(key)](api/class-keyboard.md#keyboarddownkey) and [keyboard.up(key)](api/class-keyboard.md#keyboardupkey).
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## keyboard.type(text[, options])
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- `text` <[string]> A text to type into a focused element.
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- `options` <[Object]>
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- `delay` <[number]> Time to wait between key presses in milliseconds. Defaults to 0.
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- returns: <[Promise]>
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Sends a `keydown`, `keypress`/`input`, and `keyup` event for each character in the text.
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To press a special key, like `Control` or `ArrowDown`, use [keyboard.press(key[, options])](api/class-keyboard.md#keyboardpresskey-options).
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```js
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await page.keyboard.type('Hello'); // Types instantly
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await page.keyboard.type('World', {delay: 100}); // Types slower, like a user
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```
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> **NOTE** Modifier keys DO NOT effect `keyboard.type`. Holding down `Shift` will not type the text in upper case.
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## keyboard.up(key)
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- `key` <[string]> Name of the key to press or a character to generate, such as `ArrowLeft` or `a`.
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- returns: <[Promise]>
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Dispatches a `keyup` event.
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[Playwright]: api/class-playwright.md "Playwright"
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[Browser]: api/class-browser.md "Browser"
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[BrowserContext]: api/class-browsercontext.md "BrowserContext"
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[Page]: api/class-page.md "Page"
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[Frame]: api/class-frame.md "Frame"
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[ElementHandle]: api/class-elementhandle.md "ElementHandle"
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[JSHandle]: api/class-jshandle.md "JSHandle"
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[ConsoleMessage]: api/class-consolemessage.md "ConsoleMessage"
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[Dialog]: api/class-dialog.md "Dialog"
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[Download]: api/class-download.md "Download"
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[Video]: api/class-video.md "Video"
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[FileChooser]: api/class-filechooser.md "FileChooser"
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[Keyboard]: api/class-keyboard.md "Keyboard"
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[Mouse]: api/class-mouse.md "Mouse"
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[Touchscreen]: api/class-touchscreen.md "Touchscreen"
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[Request]: api/class-request.md "Request"
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[Response]: api/class-response.md "Response"
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[Selectors]: api/class-selectors.md "Selectors"
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[Route]: api/class-route.md "Route"
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[WebSocket]: api/class-websocket.md "WebSocket"
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[TimeoutError]: api/class-timeouterror.md "TimeoutError"
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[Accessibility]: api/class-accessibility.md "Accessibility"
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[Worker]: api/class-worker.md "Worker"
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[BrowserServer]: api/class-browserserver.md "BrowserServer"
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[BrowserType]: api/class-browsertype.md "BrowserType"
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[Logger]: api/class-logger.md "Logger"
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[ChromiumBrowser]: api/class-chromiumbrowser.md "ChromiumBrowser"
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[ChromiumBrowserContext]: api/class-chromiumbrowsercontext.md "ChromiumBrowserContext"
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[ChromiumCoverage]: api/class-chromiumcoverage.md "ChromiumCoverage"
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[CDPSession]: api/class-cdpsession.md "CDPSession"
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[FirefoxBrowser]: api/class-firefoxbrowser.md "FirefoxBrowser"
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[WebKitBrowser]: api/class-webkitbrowser.md "WebKitBrowser"
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[Array]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array "Array"
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[Buffer]: https://nodejs.org/api/buffer.html#buffer_class_buffer "Buffer"
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[ChildProcess]: https://nodejs.org/api/child_process.html "ChildProcess"
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[Element]: https://developer.mozilla.org/en-US/docs/Web/API/element "Element"
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[Error]: https://nodejs.org/api/errors.html#errors_class_error "Error"
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[Evaluation Argument]: ./core-concepts.md#evaluationargument "Evaluation Argument"
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[Map]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map "Map"
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[Object]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object "Object"
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[Promise]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise "Promise"
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[RegExp]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp "RegExp"
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[Serializable]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify#Description "Serializable"
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[UIEvent.detail]: https://developer.mozilla.org/en-US/docs/Web/API/UIEvent/detail "UIEvent.detail"
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[URL]: https://nodejs.org/api/url.html "URL"
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[USKeyboardLayout]: ../src/usKeyboardLayout.ts "USKeyboardLayout"
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[UnixTime]: https://en.wikipedia.org/wiki/Unix_time "Unix Time"
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[boolean]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Boolean_type "Boolean"
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[function]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function "Function"
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[iterator]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols "Iterator"
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[null]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/null "null"
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[number]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type "Number"
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[origin]: https://developer.mozilla.org/en-US/docs/Glossary/Origin "Origin"
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[selector]: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Selectors "selector"
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[Readable]: https://nodejs.org/api/stream.html#stream_class_stream_readable "Readable"
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[string]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type "string"
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[xpath]: https://developer.mozilla.org/en-US/docs/Web/XPath "xpath"
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