JSFiddle - React, Tailwind, and code Playground

by mrcatoff

HTML

<br><br><br><br><br><br><br><br><br><br><br><br><br>
<div class="tab">
  <button class="tablinks" onclick="openTab(event, '1')">London</button>
  <button class="tablinks" onclick="openTab(event, '2')">Paris</button>
  <button class="tablinks" onclick="openTab(event, '3')">Tokyo</button>
</div>

<div id="1" class="tabcontent">
  Блок 1
</div>

<div id="2" class="tabcontent">
  Блок 2
</div>

<div id="3" class="tabcontent">
  Блок 3
</div>
<br><br><br><br><br><br><br><br><br><br><br><br><br>

CSS

.tab {
  overflow: hidden;
}

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

.tab button.active {
  border-bottom: 3px solid blue;
}

.tabcontent {
  display: none;
  padding: 6px 12px;
}

JavaScript

function openTab(evt, idn) {
  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(idn).style.display = "block";
  evt.currentTarget.className += " active";
}