Im new/noob to coding, I would just like to ask how can you make a tab proceed on the next tab once the user click next/save? and would it be possible to change the color of the finished tab? for ex. all the finished tab will be green while the current/unfinished will be yellow and the unopened is gray. please help, i cant not get pass this task huhu thank you so much in advance
<html><head><meta name="viewport" content="width=device-width, initial-scale=1"><style>* {box-sizing: border-box}body {font-family: "Lato", sans-serif;}/* Style the tab */.tab { float: left; border: 1px solid #ccc; background-color: #f1f1f1; width: 30%; height: 300px;}/* Style the buttons inside the tab */.tab button { display: block; background-color: inherit; color: black; padding: 22px 16px; width: 100%; border: none; outline: none; text-align: left; cursor: pointer; transition: 0.3s; font-size: 17px;}/* Change background color of buttons on hover */.tab button:hover { background-color: #ddd;}/* Create an active/current "tab button" class */.tab button.active { background-color: #ccc;}/* Style the tab content */.tabcontent { float: left; padding: 0px 12px; border: 1px solid #ccc; width: 70%; border-left: none; height: 300px;}</style></head><body><h2>Vertical Tabs</h2><p>Click on the buttons inside the tabbed menu:</p><div class="tab"><button class="tablinks" onclick="openCity(event, 'London')" id="defaultOpen">London</button><button class="tablinks" onclick="openCity(event, 'Paris')">Paris</button><button class="tablinks" onclick="openCity(event, 'Tokyo')">Tokyo</button></div><div id="London" class="tabcontent"><h3>London</h3><p>London is the capital city of England.</p></div><div id="Paris" class="tabcontent"><h3>Paris</h3><p>Paris is the capital of France.</p> </div><div id="Tokyo" class="tabcontent"><h3>Tokyo</h3><p>Tokyo is the capital of Japan.</p></div> </body></html> <script>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 itdocument.getElementById("defaultOpen").click();</script>