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120 lines (86 loc) · 3.51 KB
title shadow
slug /api/commands/shadow

Traverse into the shadow DOM of an element.

Syntax

.shadow(selector)
.shadow(selector, options)

Usage

Correct Usage

cy.get('.shadow-host').shadow()

Incorrect Usage

cy.shadow() // Errors, cannot be chained off 'cy'
cy.exec('npm start').shadow() // Errors, 'exec' does not yield DOM element
cy.get('.not-a-shadow-host').shadow() // Errors, subject must host a shadow root

Yields {#Yields}

  • .shadow() yields the new DOM element(s) it found.
  • .shadow() is a query, and it is safe to chain further commands.

Examples

Find and click on a button inside the shadow DOM

<div class="shadow-host">
  #shadow-root
  <button class="my-button">Click me</button>
</div>
// yields [#shadow-root (open)]
cy.get('.shadow-host').shadow().find('.my-button').click()

Rules

Requirements {#Requirements}

  • .shadow() requires being chained off a command that yields a DOM element that is a shadow host (i.e. has a shadow root directly attached to it).

Assertions {#Assertions}

  • .shadow() will automatically retry until the element(s) exist in the DOM.
  • .shadow() will automatically retry until the element(s) host(s) a shadow root.
  • .shadow() will automatically retry until all chained assertions have passed.

Timeouts {#Timeouts}

  • .shadow() can time out waiting for the element(s) to exist in the DOM.
  • .shadow() can time out waiting for the element(s) to host a shadow root.
  • .shadow() can time out waiting for assertions you've added to pass.

Known Issue

When working with cy.click(), it sometimes won't click the right element in Chrome. It's happening because of the ambiguity in spec.

In this case, pass { position: 'top' } to cy.click() like below:

cy.get('#element')
  .shadow()
  .find('[data-test-id="my-button"]')
  .click({ position: 'top' })

Command Log

Traverse into the shadow DOM of an element

cy.get('.shadow-host').shadow()

The commands above will display in the Command Log as:

When clicking on the shadow command within the command log, the console outputs the following:

See also