JSFiddle - React, Tailwind, and code Playground

by kayenglajom

HTML

<p>In this example, we use JavaScript to "click" on the London button, to open the tab on page load.</p>

<div class="tab">
  <button class="tablinks" onclick="openCity(event, 'London')" id="defaultOpen">London</button>
  <button class="tablinks" onclick="openCity(event, 'Paris')">Paris</button>
</div>

<div id="London" class="tabcontent">
  <input type="button" id="test" value="Sort List (click again to reverse)" />
  <ul id="list" class="grid-container">
    <li>Grapes</li>
    <li>Pineapple</li>
    <li>Banana</li>
    <li>Apple</li>
    <li>Orange</li>
    <li>Cherries</li>
  </ul>
</div>

<div id="Paris" class="tabcontent">
  <input type="button" id="test" value="Sort List (click again to reverse)" />
  <ul id="list" class="grid-container">
    <li>Watermelon</li>
    <li>Avocado</li>
    <li>Pears</li>
    <li>Coconut</li>
    <li>Papaya</li>
    <li>Mango</li>
  </ul>
</div>

CSS

/* Style the tab */

.tab {
  overflow: hidden;
  border: 1px solid #ccc;
  background-color: #f1f1f1;
}

/* Style the buttons inside the tab */

.tab button {
  background-color: inherit;
  float: left;
  border: none;
  outline: none;
  cursor: pointer;
  padding: 14px 16px;
  transition: 0.3s;
  font-size: 17px;
}

/* Change background color of buttons on hover */

.tab button:hover {
  background-color: #ddd;
}

/* Create an active/current tablink class */

.tab button.active {
  background-color: #ccc;
}

/* Style the tab content */

.tabcontent {
  display: none;
  padding: 6px 12px;
  border: 1px solid #ccc;
  border-top: none;
}

JavaScript

function openCity(evt, cityName) {
  var i, tabcontent, tablinks;
  tabcontent = document.getElementsByClassName("tabcontent");
  for (i = 0; i < tabcontent.length; i++) {
    tabcontent[i].style.display = "none";
  }
  tablinks = document.getElementsByClassName("tablinks");
  for (i = 0; i < tablinks.length; i++) {
    tablinks[i].className = tablinks[i].className.replace(" active", "");
  }
  document.getElementById(cityName).style.display = "block";
  evt.currentTarget.className += " active";
}

// Get the element with id="defaultOpen" and click on it
document.getElementById("defaultOpen").click();