[Home](./index.md) > [puppeteer](./puppeteer.md) > [ExecutionContext](./puppeteer.executioncontext.md) > [(constructor)](./puppeteer.executioncontext._constructor_.md) ## ExecutionContext.(constructor) Constructs a new instance of the `ExecutionContext` class Signature: ```typescript constructor(client: CDPSession, contextPayload: Protocol.Runtime.ExecutionContextDescription, world: DOMWorld); ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | client | [CDPSession](./puppeteer.cdpsession.md) | | | contextPayload | Protocol.Runtime.ExecutionContextDescription | | | world | DOMWorld | |