github/puppeteer
0
0
Fork 0
mirror of https://github.com/puppeteer/puppeteer synced 2024-06-14 14:02:48 +00:00
Code Issues Packages Projects Releases Wiki Activity

chore: remove docusaurus metadata from README.md (#8624)

Browse Source
This commit is contained in:
jrandolf
2022-07-05 14:42:31 +02:00
committed by GitHub
parent fc77c1517f
commit 45eb2c607f
728 changed files with 15375 additions and 17493 deletions
Download Patch File Download Diff File Expand all files Collapse all files

106
docs/api/puppeteer.elementhandle.__eval.md
View File

@@ -1,57 +1,49 @@
---
sidebar_label: ElementHandle.$$eval
---
# ElementHandle.$$eval() method
This method runs `document.querySelectorAll` within the element and passes it as the first argument to `pageFunction`. If there's no element matching `selector`, the method throws an error.
If `pageFunction` returns a Promise, then `frame.$$eval` would wait for the promise to resolve and return its value.
**Signature:**
```typescript
class ElementHandle {
$$eval<
Selector extends keyof HTMLElementTagNameMap,
Params extends unknown[],
Func extends EvaluateFunc<
[HTMLElementTagNameMap[Selector][], ...Params]
> = EvaluateFunc<[HTMLElementTagNameMap[Selector][], ...Params]>
>(
selector: Selector,
pageFunction: Func | string,
...args: Params
): Promise<Awaited<ReturnType<Func>>>;
}
```
## Parameters
| Parameter | Type | Description |
| ------------ | -------------- | ----------- |
| selector | Selector | |
| pageFunction | Func \| string | |
| args | Params | |
**Returns:**
Promise&lt;Awaited&lt;ReturnType&lt;Func&gt;&gt;&gt;
## Example 1
```html
<div class="feed">
<div class="tweet">Hello!</div>
<div class="tweet">Hi!</div>
</div>
```
## Example 2
```ts
const feedHandle = await page.$('.feed');
expect(
await feedHandle.$$eval('.tweet', nodes => nodes.map(n => n.innerText))
).toEqual(['Hello!', 'Hi!']);
```
---
sidebar_label: ElementHandle.$$eval
---
# ElementHandle.$$eval() method
This method runs `document.querySelectorAll` within the element and passes it as the first argument to `pageFunction`. If there's no element matching `selector`, the method throws an error.
If `pageFunction` returns a Promise, then `frame.$$eval` would wait for the promise to resolve and return its value.
**Signature:**
```typescript
class ElementHandle {$$eval<Selector extends keyof HTMLElementTagNameMap, Params extends unknown[], Func extends EvaluateFunc<[
HTMLElementTagNameMap[Selector][],
...Params
]> = EvaluateFunc<[HTMLElementTagNameMap[Selector][], ...Params]>>(selector: Selector, pageFunction: Func | string, ...args: Params): Promise<Awaited<ReturnType<Func>>>;}
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| selector | Selector | |
| pageFunction | Func \| string | |
| args | Params | |
**Returns:**
Promise&lt;Awaited&lt;ReturnType&lt;Func&gt;&gt;&gt;
## Example 1
```html
<div class="feed">
<div class="tweet">Hello!</div>
<div class="tweet">Hi!</div>
</div>
```
## Example 2
```ts
const feedHandle = await page.$('.feed');
expect(await feedHandle.$$eval('.tweet', nodes => nodes.map(n => n.innerText)))
.toEqual(['Hello!', 'Hi!']);
```