How do I use the `locator.filter()` method in Playwright to pass a child locator as a parameter and click the child element without getting a 'strict mode violation' error?

Answer

Sure, you can pass a child locator as a parameter and click the child element without getting a 'strict mode violation' error in Playwright. You can do this using the locator.filter() method.

Suppose you have this DOM structure:

<li><label>Hello</label></li>
<li><label>World</label></li>

And you want to target the parent <li> of a label with text "Hello". You can use locator.filter() with page.getByText('Hello') like this:

const child = page.getByText('Hello');
const parent = page.getByRole('listitem').filter({ has: child });

This way, you're specifying that you want to find the parent element that contains the specified child element. This is more reliable than using XPath.

But if there's no suitable locator for the parent element or if changes in DOM structure might break your tests, you can use XPath with xpath=... notation. Here's how:

const parent = page.getByText('Hello').locator('xpath=..');

Remember, React locator functionality is experimental and prefixed with _. It might change in future versions of Playwright.

So, by using Playwright's locator.filter() method or XPath notation (xpath=...), you can pass a child locator as a parameter and click the child element without a 'strict mode violation' error.