puppeteer/new-docs/puppeteer.frame.waitforselector.md

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[Home](./index.md) &gt; [puppeteer](./puppeteer.md) &gt; [Frame](./puppeteer.frame.md) &gt; [waitForSelector](./puppeteer.frame.waitforselector.md)

## Frame.waitForSelector() method

<b>Signature:</b>

```typescript
waitForSelector(selector: string, options?: WaitForSelectorOptions): Promise<ElementHandle | null>;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  selector | string | the selector to wait for. |
|  options | [WaitForSelectorOptions](./puppeteer.waitforselectoroptions.md) | options to define if the element should be visible and how long to wait before timing out. |

<b>Returns:</b>

Promise&lt;[ElementHandle](./puppeteer.elementhandle.md) \| null&gt;

a promise which resolves when an element matching the selector string is added to the DOM.

## Remarks

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.

This method works across navigations.

## Example


```js
const puppeteer = require('puppeteer');

(async () => {
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  let currentURL;
  page.mainFrame()
  .waitForSelector('img')
  .then(() => console.log('First URL with image: ' + currentURL));

  for (currentURL of ['https://example.com', 'https://google.com', 'https://bbc.com']) {
    await page.goto(currentURL);
  }
  await browser.close();
})();

```