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Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: Nikolay Vitkov <nvitkov@chromium.org>
101 lines
2.4 KiB
Markdown
101 lines
2.4 KiB
Markdown
---
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sidebar_label: Page.waitForSelector
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---
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# Page.waitForSelector() method
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Wait for the `selector` to appear in page. If at the moment of calling the method the `selector` already exists, the method will return immediately. If the `selector` doesn't appear after the `timeout` milliseconds of waiting, the function will throw.
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#### Signature:
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```typescript
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class Page {
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waitForSelector<Selector extends string>(
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selector: Selector,
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options?: WaitForSelectorOptions
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): Promise<ElementHandle<NodeFor<Selector>> | null>;
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}
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```
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## Parameters
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<table><thead><tr><th>
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Parameter
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</th><th>
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Type
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</th><th>
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Description
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</th></tr></thead>
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<tbody><tr><td>
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selector
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</td><td>
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Selector
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</td><td>
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A [selector](https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Selectors) of an element to wait for
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</td></tr>
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<tr><td>
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options
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</td><td>
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[WaitForSelectorOptions](./puppeteer.waitforselectoroptions.md)
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</td><td>
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_(Optional)_ Optional waiting parameters
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</td></tr>
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</tbody></table>
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**Returns:**
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Promise<[ElementHandle](./puppeteer.elementhandle.md)<[NodeFor](./puppeteer.nodefor.md)<Selector>> \| null>
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Promise which resolves when element specified by selector string is added to DOM. Resolves to `null` if waiting for hidden: `true` and selector is not found in DOM.
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## Remarks
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The optional Parameter in Arguments `options` are:
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- `visible`: A boolean wait for element to be present in DOM and to be visible, i.e. to not have `display: none` or `visibility: hidden` CSS properties. Defaults to `false`.
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- `hidden`: Wait for element to not be found in the DOM or to be hidden, i.e. have `display: none` or `visibility: hidden` CSS properties. Defaults to `false`.
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- `timeout`: maximum time to wait for in milliseconds. Defaults to `30000` (30 seconds). Pass `0` to disable timeout. The default value can be changed by using the [Page.setDefaultTimeout()](./puppeteer.page.setdefaulttimeout.md) method.
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## Example
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This method works across navigations:
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```ts
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import puppeteer from 'puppeteer';
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(async () => {
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const browser = await puppeteer.launch();
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const page = await browser.newPage();
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let currentURL;
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page
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.waitForSelector('img')
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.then(() => console.log('First URL with image: ' + currentURL));
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for (currentURL of [
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'https://example.com',
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'https://google.com',
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'https://bbc.com',
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]) {
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await page.goto(currentURL);
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}
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await browser.close();
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})();
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```
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