puppeteer/website/versioned_docs/version-9.1.1/puppeteer.executioncontext.evaluatehandle.md
2021-08-10 11:09:48 +01:00

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[Home](./index.md) &gt; [puppeteer](./puppeteer.md) &gt; [ExecutionContext](./puppeteer.executioncontext.md) &gt; [evaluateHandle](./puppeteer.executioncontext.evaluatehandle.md)
## ExecutionContext.evaluateHandle() method
<b>Signature:</b>
```typescript
evaluateHandle<HandleType extends JSHandle | ElementHandle = JSHandle>(pageFunction: EvaluateHandleFn, ...args: SerializableOrJSHandle[]): Promise<HandleType>;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| pageFunction | [EvaluateHandleFn](./puppeteer.evaluatehandlefn.md) | a function to be evaluated in the <code>executionContext</code> |
| args | [SerializableOrJSHandle](./puppeteer.serializableorjshandle.md)\[\] | argument to pass to the page function |
<b>Returns:</b>
Promise&lt;HandleType&gt;
A promise that resolves to the return value of the given function as an in-page object (a [JSHandle](./puppeteer.jshandle.md)).
## Remarks
The only difference between `executionContext.evaluate` and `executionContext.evaluateHandle` is that `executionContext.evaluateHandle` returns an in-page object (a [JSHandle](./puppeteer.jshandle.md)). If the function passed to the `executionContext.evaluateHandle` returns a Promise, then `executionContext.evaluateHandle` would wait for the promise to resolve and return its value.
## Example 1
```js
const context = await page.mainFrame().executionContext();
const aHandle = await context.evaluateHandle(() => Promise.resolve(self));
aHandle; // Handle for the global object.
```
## Example 2
A string can also be passed in instead of a function.
```js
// Handle for the '3' * object.
const aHandle = await context.evaluateHandle('1 + 2');
```
## Example 3
JSHandle instances can be passed as arguments to the `executionContext.* evaluateHandle`:
```js
const aHandle = await context.evaluateHandle(() => document.body);
const resultHandle = await context.evaluateHandle(body => body.innerHTML, * aHandle);
console.log(await resultHandle.jsonValue()); // prints body's innerHTML
await aHandle.dispose();
await resultHandle.dispose();
```