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Home > puppeteer > ExecutionContext
ExecutionContext class
This class represents a context for JavaScript execution. A [Page] might have many execution contexts: - each frame has "default" execution context that is always created after frame is attached to DOM. This context is returned by the Frame.executionContext() method. - Extension's content scripts create additional execution contexts.
Besides pages, execution contexts can be found in workers.
Signature:
export declare class ExecutionContext
Remarks
The constructor for this class is marked as internal. Third-party code should not call the constructor directly or create subclasses that extend the ExecutionContext class.
Methods
| Method | Modifiers | Description |
|---|---|---|
| evaluate(pageFunction, args) | ||
| evaluateHandle(pageFunction, args) | ||
| frame() | ||
| queryObjects(prototypeHandle) | This method iterates the JavaScript heap and finds all the objects with the given prototype. |