47 lines
1.8 KiB
Markdown
47 lines
1.8 KiB
Markdown
|
<!-- Do not edit this file. It is automatically generated by API Documenter. -->
|
||
|
|
|
||
|
|
[Home](./index.md) > [puppeteer](./puppeteer.md) > [CDPSession](./puppeteer.cdpsession.md)
|
||
|
|
|
||
|
|
## CDPSession class
|
||
|
|
|
||
|
|
The `CDPSession` instances are used to talk raw Chrome Devtools Protocol.
|
||
|
|
|
||
|
|
<b>Signature:</b>
|
||
|
|
|
||
|
|
```typescript
|
||
|
|
export declare class CDPSession extends EventEmitter
|
||
|
|
```
|
||
|
|
<b>Extends:</b> [EventEmitter](./puppeteer.eventemitter.md)
|
||
|
|
|
||
|
|
## Remarks
|
||
|
|
|
||
|
|
Protocol methods can be called with [CDPSession.send()](./puppeteer.cdpsession.send.md) method and protocol events can be subscribed to with `CDPSession.on` method.
|
||
|
|
|
||
|
|
Useful links: [DevTools Protocol Viewer](https://chromedevtools.github.io/devtools-protocol/) and [Getting Started with DevTools Protocol](https://github.com/aslushnikov/getting-started-with-cdp/blob/master/README.md).
|
||
|
|
|
||
|
|
The constructor for this class is marked as internal. Third-party code should not call the constructor directly or create subclasses that extend the `CDPSession` class.
|
||
|
|
|
||
|
|
## Example
|
||
|
|
|
||
|
|
|
||
|
|
```js
|
||
|
|
const client = await page.target().createCDPSession();
|
||
|
|
await client.send('Animation.enable');
|
||
|
|
client.on('Animation.animationCreated', () => console.log('Animation created!'));
|
||
|
|
const response = await client.send('Animation.getPlaybackRate');
|
||
|
|
console.log('playback rate is ' + response.playbackRate);
|
||
|
|
await client.send('Animation.setPlaybackRate', {
|
||
|
|
playbackRate: response.playbackRate / 2
|
||
|
|
});
|
||
|
|
|
||
|
|
```
|
||
|
|
|
||
|
|
## Methods
|
||
|
|
|
||
|
|
| Method | Modifiers | Description |
|
||
|
|
| --- | --- | --- |
|
||
|
|
| [connection()](./puppeteer.cdpsession.connection.md) | | |
|
||
|
|
| [detach()](./puppeteer.cdpsession.detach.md) | | Detaches the cdpSession from the target. Once detached, the cdpSession object won't emit any events and can't be used to send messages. |
|
||
|
|
| [send(method, paramArgs)](./puppeteer.cdpsession.send.md) | | |
|
||
|
|
|