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https://github.com/puppeteer/puppeteer
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109 lines
2.8 KiB
Markdown
109 lines
2.8 KiB
Markdown
# Locators
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Locators is a new experimental API that combines `waitForSelector` and element
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actions in a single unit. In combination with additional precondition checks
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this allows locators to retry failed actions automatically leading to less flaky
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automation scripts.
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:::note
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Locators API is experimental and we will not follow semver for breaking changes
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in the Locators API.
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:::
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## Clicking an element
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```ts
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await page.locator('button').click();
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```
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The following preconditions are automatically checked:
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- Ensures the element is in the viewport.
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- Waits for the element to become
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[visible](https://pptr.dev/api/puppeteer.elementhandle.isvisible/) or hidden.
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- Waits for the element to become enabled.
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- Waits for the element to have a stable bounding box over two consecutive
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animation frames.
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## Filling out an input
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```ts
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await page.locator('input').fill('value');
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```
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Automatically detects the input type and choose an approritate way to fill it out with the provided value.
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The following preconditions are automatically checked:
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- Ensures the element is in the viewport.
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- Waits for the element to become
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[visible](https://pptr.dev/api/puppeteer.elementhandle.isvisible/) or hidden.
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- Waits for the element to become enabled.
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- Waits for the element to have a stable bounding box over two consecutive
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animation frames.
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## Hover over an element
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```ts
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await page.locator('div').hover();
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```
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The following preconditions are automatically checked:
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- Ensures the element is in the viewport.
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- Waits for the element to become
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[visible](https://pptr.dev/api/puppeteer.elementhandle.isvisible/) or hidden.
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- Waits for the element to have a stable bounding box over two consecutive
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animation frames.
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## Scroll an element
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```ts
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await page.locator('div').scroll({
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scrollLeft: 10,
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scrollTop: 20,
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});
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```
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The following preconditions are automatically checked:
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- Ensures the element is in the viewport.
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- Waits for the element to become
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[visible](https://pptr.dev/api/puppeteer.elementhandle.isvisible/) or hidden.
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- Waits for the element to have a stable bounding box over two consecutive
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animation frames.
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## Configuring locators
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Locators can be configured to tune configure the preconditions and other other options:
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```ts
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await page
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.locator('button')
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.setEnsureElementIsInTheViewport(false)
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.setTimeout(0)
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.setVisibility(null)
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.setWaitForEnabled(false)
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.setWaitForStableBoundingBox(false)
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.click();
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```
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## Getting locator events
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Currently, locators support a single event that notifies you when the locator is about to perform the action:
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```ts
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let willClick = false;
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await page
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.locator('button')
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.on(LocatorEmittedEvents.Action, () => {
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willClick = true;
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})
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.click();
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```
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This event can be used for logging/debugging or other purposes. The event might
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fire multiple times if the locator retries the action.
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