jquery accordion - onclick打开所有accordion

<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<script src="accordion.js"></script>

<div class="accordion">
  <div class="accordion-item">
    <h3>Item 1</h3>
    <div>Content 1</div>
  </div>
  <div class="accordion-item">
    <h3>Item 2</h3>
    <div>Content 2</div>
  </div>
  <div class="accordion-item">
    <h3>Item 3</h3>
    <div>Content 3</div>
  </div>
</div>

$(document).ready(function() {
  $(".accordion").accordion();
});

$(document).ready(function() {
  $(".accordion").accordion();

  $(".open-all-button").click(function() {
    $(".accordion-item").addClass("active");
    $(".accordion-item div").slideDown();
  });
});