puppeteer/website/versioned_docs/version-19.5.2/api/puppeteer.jshandle.md
release-please[bot] e9df6750d2
chore: release main (#9495)
🤖 I have created a release *beep* *boop*
---


<details><summary>puppeteer: 19.5.2</summary>

##
[19.5.2](https://github.com/puppeteer/puppeteer/compare/puppeteer-v19.5.1...puppeteer-v19.5.2)
(2023-01-11)


### Miscellaneous Chores

* **puppeteer:** Synchronize puppeteer versions


### Dependencies

* The following workspace dependencies were updated
  * dependencies
    * puppeteer-core bumped from 19.5.1 to 19.5.2
</details>

<details><summary>puppeteer-core: 19.5.2</summary>

##
[19.5.2](https://github.com/puppeteer/puppeteer/compare/puppeteer-core-v19.5.1...puppeteer-core-v19.5.2)
(2023-01-11)


### Bug Fixes

* make sure browser fetcher in launchers uses configuration
([#9493](https://github.com/puppeteer/puppeteer/issues/9493))
([df55439](df554397b5)),
closes [#9470](https://github.com/puppeteer/puppeteer/issues/9470)
</details>

---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
2023-01-12 08:21:09 +01:00

49 lines
4.6 KiB
Markdown

---
sidebar_label: JSHandle
---
# JSHandle class
Represents a reference to a JavaScript object. Instances can be created using [Page.evaluateHandle()](./puppeteer.page.evaluatehandle.md).
Handles prevent the referenced JavaScript object from being garbage-collected unless the handle is purposely [disposed](./puppeteer.jshandle.dispose.md). JSHandles are auto-disposed when their associated frame is navigated away or the parent context gets destroyed.
Handles can be used as arguments for any evaluation function such as [Page.$eval()](./puppeteer.page._eval.md), [Page.evaluate()](./puppeteer.page.evaluate.md), and [Page.evaluateHandle()](./puppeteer.page.evaluatehandle.md). They are resolved to their referenced object.
#### Signature:
```typescript
export declare class JSHandle<T = unknown>
```
## 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 `JSHandle` class.
## Example
```ts
const windowHandle = await page.evaluateHandle(() => window);
```
## Properties
| Property | Modifiers | Type | Description |
| --------------------------------------------------------------------- | --------- | ---- | -------------------------------------------------------------------------------- |
| [\[\_\_JSHandleSymbol\]?](./puppeteer.jshandle.___jshandlesymbol_.md) | | T | <i>(Optional)</i> Used for nominally typing [JSHandle](./puppeteer.jshandle.md). |
## Methods
| Method | Modifiers | Description |
| ---------------------------------------------------------------------------- | --------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [asElement()](./puppeteer.jshandle.aselement.md) | | |
| [dispose()](./puppeteer.jshandle.dispose.md) | | Releases the object referenced by the handle for garbage collection. |
| [evaluate(pageFunction, args)](./puppeteer.jshandle.evaluate.md) | | Evaluates the given function with the current handle as its first argument. |
| [evaluateHandle(pageFunction, args)](./puppeteer.jshandle.evaluatehandle.md) | | Evaluates the given function with the current handle as its first argument. |
| [getProperties()](./puppeteer.jshandle.getproperties.md) | | Gets a map of handles representing the properties of the current handle. |
| [getProperty(propertyName)](./puppeteer.jshandle.getproperty.md) | | Fetches a single property from the referenced object. |
| [getProperty(propertyName)](./puppeteer.jshandle.getproperty_1.md) | | |
| [jsonValue()](./puppeteer.jshandle.jsonvalue.md) | | |
| [remoteObject()](./puppeteer.jshandle.remoteobject.md) | | Provides access to the \[Protocol.Runtime.RemoteObject\](https://chromedevtools.github.io/devtools-protocol/tot/Runtime/\#type-RemoteObject) backing this handle. |
| [toString()](./puppeteer.jshandle.tostring.md) | | Returns a string representation of the JSHandle. |