--- title: Interactivity API | Browser Mode --- # Interactivity API Vitest implements a subset of [`@testing-library/user-event`](https://testing-library.com/docs/user-event) APIs using [Chrome DevTools Protocol](https://chromedevtools.github.io/devtools-protocol/) or [webdriver](https://www.w3.org/TR/webdriver/) instead of faking events which makes the browser behaviour more reliable and consistent with how users interact with a page. ```ts import { userEvent } from '@vitest/browser/context' await userEvent.click(document.querySelector('.button')) ``` Almost every `userEvent` method inherits its provider options. To see all available options in your IDE, add `webdriver` or `playwright` types (depending on your provider) to your `tsconfig.json` file: ::: code-group ```json [playwright] { "compilerOptions": { "types": [ "@vitest/browser/providers/playwright" ] } } ``` ```json [webdriverio] { "compilerOptions": { "types": [ "@vitest/browser/providers/webdriverio" ] } } ``` ::: ## userEvent.setup - **Type:** `() => UserEvent` Creates a new user event instance. This is useful if you need to keep the state of keyboard to press and release buttons correctly. ::: warning Unlike `@testing-library/user-event`, the default `userEvent` instance from `@vitest/browser/context` is created once, not every time its methods are called! You can see the difference in how it works in this snippet: ```ts import { userEvent as vitestUserEvent } from '@vitest/browser/context' import { userEvent as originalUserEvent } from '@testing-library/user-event' await vitestUserEvent.keyboard('{Shift}') // press shift without releasing await vitestUserEvent.keyboard('{/Shift}') // releases shift await originalUserEvent.keyboard('{Shift}') // press shift without releasing await originalUserEvent.keyboard('{/Shift}') // DID NOT release shift because the state is different ``` This behaviour is more useful because we do not emulate the keyboard, we actually press the Shift, so keeping the original behaviour would cause unexpected issues when typing in the field. ::: ## userEvent.click - **Type:** `(element: Element | Locator, options?: UserEventClickOptions) => Promise` Click on an element. Inherits provider's options. Please refer to your provider's documentation for detailed explanation about how this method works. ```ts import { page, userEvent } from '@vitest/browser/context' test('clicks on an element', async () => { const logo = page.getByRole('img', { name: /logo/ }) await userEvent.click(logo) // or you can access it directly on the locator await logo.click() }) ``` References: - [Playwright `locator.click` API](https://playwright.dev/docs/api/class-locator#locator-click) - [WebdriverIO `element.click` API](https://webdriver.io/docs/api/element/click/) - [testing-library `click` API](https://testing-library.com/docs/user-event/convenience/#click) ## userEvent.dblClick - **Type:** `(element: Element | Locator, options?: UserEventDoubleClickOptions) => Promise` Triggers a double click event on an element. Please refer to your provider's documentation for detailed explanation about how this method works. ```ts import { page, userEvent } from '@vitest/browser/context' test('triggers a double click on an element', async () => { const logo = page.getByRole('img', { name: /logo/ }) await userEvent.dblClick(logo) // or you can access it directly on the locator await logo.dblClick() }) ``` References: - [Playwright `locator.dblclick` API](https://playwright.dev/docs/api/class-locator#locator-dblclick) - [WebdriverIO `element.doubleClick` API](https://webdriver.io/docs/api/element/doubleClick/) - [testing-library `dblClick` API](https://testing-library.com/docs/user-event/convenience/#dblClick) ## userEvent.tripleClick - **Type:** `(element: Element | Locator, options?: UserEventTripleClickOptions) => Promise` Triggers a triple click event on an element. Since there is no `tripleclick` in browser api, this method will fire three click events in a row, and so you must check [click event detail](https://developer.mozilla.org/en-US/docs/Web/API/Element/click_event#usage_notes) to filter the event: `evt.detail === 3`. Please refer to your provider's documentation for detailed explanation about how this method works. ```ts import { page, userEvent } from '@vitest/browser/context' test('triggers a triple click on an element', async () => { const logo = page.getByRole('img', { name: /logo/ }) let tripleClickFired = false logo.addEventListener('click', (evt) => { if (evt.detail === 3) { tripleClickFired = true } }) await userEvent.tripleClick(logo) // or you can access it directly on the locator await logo.tripleClick() expect(tripleClickFired).toBe(true) }) ``` References: - [Playwright `locator.click` API](https://playwright.dev/docs/api/class-locator#locator-click): implemented via `click` with `clickCount: 3` . - [WebdriverIO `browser.action` API](https://webdriver.io/docs/api/browser/action/): implemented via actions api with `move` plus three `down + up + pause` events in a row - [testing-library `tripleClick` API](https://testing-library.com/docs/user-event/convenience/#tripleClick) ## userEvent.fill - **Type:** `(element: Element | Locator, text: string) => Promise` Set a value to the `input/textarea/conteneditable` field. This will remove any existing text in the input before setting the new value. ```ts import { page, userEvent } from '@vitest/browser/context' test('update input', async () => { const input = page.getByRole('input') await userEvent.fill(input, 'foo') // input.value == foo await userEvent.fill(input, '{{a[[') // input.value == {{a[[ await userEvent.fill(input, '{Shift}') // input.value == {Shift} // or you can access it directly on the locator await input.fill('foo') // input.value == foo }) ``` This methods focuses the element, fills it and triggers an `input` event after filling. You can use an empty string to clear the field. ::: tip This API is faster than using [`userEvent.type`](#userevent-type) or [`userEvent.keyboard`](#userevent-keyboard), but it **doesn't support** [user-event `keyboard` syntax](https://testing-library.com/docs/user-event/keyboard) (e.g., `{Shift}{selectall}`). We recommend using this API over [`userEvent.type`](#userevent-type) in situations when you don't need to enter special characters or have granular control over keypress events. ::: References: - [Playwright `locator.fill` API](https://playwright.dev/docs/api/class-locator#locator-fill) - [WebdriverIO `element.setValue` API](https://webdriver.io/docs/api/element/setValue) - [testing-library `type` API](https://testing-library.com/docs/user-event/utility/#type) ## userEvent.keyboard - **Type:** `(text: string) => Promise` The `userEvent.keyboard` allows you to trigger keyboard strokes. If any input has a focus, it will type characters into that input. Otherwise, it will trigger keyboard events on the currently focused element (`document.body` if there are no focused elements). This API supports [user-event `keyboard` syntax](https://testing-library.com/docs/user-event/keyboard). ```ts import { userEvent } from '@vitest/browser/context' test('trigger keystrokes', async () => { await userEvent.keyboard('foo') // translates to: f, o, o await userEvent.keyboard('{{a[[') // translates to: {, a, [ await userEvent.keyboard('{Shift}{f}{o}{o}') // translates to: Shift, f, o, o await userEvent.keyboard('{a>5}') // press a without releasing it and trigger 5 keydown await userEvent.keyboard('{a>5/}') // press a for 5 keydown and then release it }) ``` References: - [Playwright `Keyboard` API](https://playwright.dev/docs/api/class-keyboard) - [WebdriverIO `action('key')` API](https://webdriver.io/docs/api/browser/action#key-input-source) - [testing-library `type` API](https://testing-library.com/docs/user-event/utility/#type) ## userEvent.tab - **Type:** `(options?: UserEventTabOptions) => Promise` Sends a `Tab` key event. This is a shorthand for `userEvent.keyboard('{tab}')`. ```ts import { page, userEvent } from '@vitest/browser/context' test('tab works', async () => { const [input1, input2] = page.getByRole('input').elements() expect(input1).toHaveFocus() await userEvent.tab() expect(input2).toHaveFocus() await userEvent.tab({ shift: true }) expect(input1).toHaveFocus() }) ``` References: - [Playwright `Keyboard` API](https://playwright.dev/docs/api/class-keyboard) - [WebdriverIO `action('key')` API](https://webdriver.io/docs/api/browser/action#key-input-source) - [testing-library `tab` API](https://testing-library.com/docs/user-event/convenience/#tab) ## userEvent.type - **Type:** `(element: Element | Locator, text: string, options?: UserEventTypeOptions) => Promise` ::: warning If you don't rely on [special characters](https://testing-library.com/docs/user-event/keyboard) (e.g., `{shift}` or `{selectall}`), it is recommended to use [`userEvent.fill`](#userevent-fill) instead. ::: The `type` method implements `@testing-library/user-event`'s [`type`](https://testing-library.com/docs/user-event/utility/#type) utility built on top of [`keyboard`](https://testing-library.com/docs/user-event/keyboard) API. This function allows you to type characters into an input/textarea/conteneditable element. It supports [user-event `keyboard` syntax](https://testing-library.com/docs/user-event/keyboard). If you just need to press characters without an input, use [`userEvent.keyboard`](#userevent-keyboard) API. ```ts import { page, userEvent } from '@vitest/browser/context' test('update input', async () => { const input = page.getByRole('input') await userEvent.type(input, 'foo') // input.value == foo await userEvent.type(input, '{{a[[') // input.value == foo{a[ await userEvent.type(input, '{Shift}') // input.value == foo{a[ }) ``` ::: note Vitest doesn't expose `.type` method on the locator like `input.type` because it exists only for compatiblity with the `userEvent` library. Consider using `.fill` instead as it is faster. ::: References: - [Playwright `locator.press` API](https://playwright.dev/docs/api/class-locator#locator-press) - [WebdriverIO `action('key')` API](https://webdriver.io/docs/api/browser/action#key-input-source) - [testing-library `type` API](https://testing-library.com/docs/user-event/utility/#type) ## userEvent.clear - **Type:** `(element: Element | Locator) => Promise` This method clears the input element content. ```ts import { page, userEvent } from '@vitest/browser/context' test('clears input', async () => { const input = page.getByRole('input') await userEvent.fill(input, 'foo') expect(input).toHaveValue('foo') await userEvent.clear(input) // or you can access it directly on the locator await input.clear() expect(input).toHaveValue('') }) ``` References: - [Playwright `locator.clear` API](https://playwright.dev/docs/api/class-locator#locator-clear) - [WebdriverIO `element.clearValue` API](https://webdriver.io/docs/api/element/clearValue) - [testing-library `clear` API](https://testing-library.com/docs/user-event/utility/#clear) ## userEvent.selectOptions - **Type:** `(element: Element | Locator, values: HTMLElement | HTMLElement[] | Locator | Locator[] | string | string[], options?: UserEventSelectOptions) => Promise` The `userEvent.selectOptions` allows selecting a value in a `