61 lines
2.0 KiB
Markdown
61 lines
2.0 KiB
Markdown
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---
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sidebar_label: Frame.waitForSelector
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---
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# Frame.waitForSelector() method
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**Signature:**
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```typescript
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class Frame {
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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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| Parameter | Type | Description |
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| --------- | --------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------ |
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| selector | Selector | the selector to wait for. |
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| options | [WaitForSelectorOptions](./puppeteer.waitforselectoroptions.md) | <i>(Optional)</i> options to define if the element should be visible and how long to wait before timing out. |
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**Returns:**
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Promise<[ElementHandle](./puppeteer.elementhandle.md)<[NodeFor](./puppeteer.nodefor.md)<Selector>> \| null>
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a promise which resolves when an element matching the selector string is added to the DOM.
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## Remarks
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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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This method works across navigations.
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## Example
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```ts
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const puppeteer = require('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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.mainFrame()
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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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