[Home](./index.md) > [puppeteer](./puppeteer.md) > [JSHandle](./puppeteer.jshandle.md) > [evaluate](./puppeteer.jshandle.evaluate.md)
## JSHandle.evaluate() method
Signature:
```typescript
evaluate(pageFunction: Function | string, ...args: unknown[]): Promise;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| pageFunction | Function \| string | |
| args | unknown\[\] | |
Returns:
Promise<ReturnType>