Select Next Day

Let's find the next <TD> element after <TD class="day active"> element.

<table>
  <tr>
    <td class="day">1</td>
    <td class="day">2</td>
    <td class="day active">3</td>
  </tr>
  <tr>
    <td class="day">4</td>
    <td class="day">5</td>
    <td class="day">6</td>
  </tr>
</table>

1	2	3
4	5	6

.active {
  font-weight: bold;
}

cy.get('.day.active')
  .invoke('index')
  .then((k) => {
    cy.get('.day')
      .eq(k + 1)
      .should('have.text', '4')
  })