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each

Iterate through an array like structure (arrays or objects with a length property).

It is unsafe to chain further commands that rely on the subject after .each().

Syntax​

.each(callbackFn)

Usage​

Correct Usage

cy.get('ul>li').each(() => {...}) // Iterate through each 'li'
cy.getCookies().each(() => {...}) // Iterate through each cookie

Incorrect Usage


cy.each(() => {...})            // Errors, cannot be chained off 'cy'
cy.clock().each(() => {...})    // Errors, 'clock' does not yield an array

Arguments​

callbackFn (Function)

Pass a function that is invoked with the following arguments:

  • value
  • index
  • collection

Yields ​

  • .each() yields the same subject it was given.
  • It is unsafe to chain further commands that rely on the subject after .each().

Examples​

DOM Elements​

Iterate over an array of DOM elements

cy.get('ul>li').each(($el, index, $list) => {
  // $el is a wrapped jQuery element
  if ($el.someMethod() === 'something') {
    // wrap this element so we can
    // use cypress commands on it
    cy.wrap($el).click()
  } else {
    // do something else
  }
})

The original array is always yielded

No matter what is returned in the callback function, .each() will always yield the original array.

cy.get('li')
  .should('have.length', 3)
  .each(($li, index, $lis) => {
    return 'something else'
  })
  .then(($lis) => {
    expect($lis).to.have.length(3) // true
  })

Promises​

Promises are awaited

If your callback function returns a Promise, it will be awaited before iterating over the next element in the collection.

cy.wrap([1, 2, 3]).each((num, i, array) => {
  return new Cypress.Promise((resolve) => {
    setTimeout(() => {
      resolve()
    }, num * 100)
  })
})

Notes​

Return early​

Stop each prematurely

You can stop the .each() loop early by returning false in the callback function.

Rules​

Requirements ​

  • .each() requires being chained off a previous command.

Assertions ​

  • .each() will only run assertions you have chained once, and will not retry.

Timeouts ​

  • .each() can time out waiting for a promise you've returned to resolve.

Command Log​

  • cy.each() does not log in the Command Log

See also​

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