SOURCE

let lis = document.querySelector("ul").querySelectorAll("li");
        let items = document.querySelector(".content").querySelectorAll(".item");
        for (let i = 0; i < lis.length; i++) {
            lis[i].setAttribute('index', i);
            lis[i].addEventListener('click', function() {
                for (let j = 0; j < lis.length; j++) {
                    lis[j].className = "common";
                }
                lis[i].className = "common current";
                let index = lis[i].getAttribute('index');
                for (let k = 0; k < items.length; k++) {
                    items[k].style.display = "";
                }
                items[index].style.display = "block";
            });
        }

 <div class = "tabList">
    <div class = "options">
        <ul>
            <li class = "common current">Tab1</li>
            <li class = "common">Tab2</li>
            <li class = "common">Tab3</li>
        </ul>
    </div>
    <div class = "content">
        <div class = "item" style = "display: block;">Content of Tab Pane 1</div>
        <div class = "item">Content of Tab Pane 2</div>
        <div class = "item">Content of Tab Pane 3</div>
    </div>
</div>

* {
            margin: 0;
            padding: 0;
        }
        li {
            list-style: none;
        }
        .tabList {
            width: 600px;
            height: 200px;
            border: 1px solid rgba(0,0,0,.2);
            margin: 100px auto;
            padding: 10px 20px;
            font-size: 14px;
        }
        .options {
            border-bottom: 1px solid rgba(0,0,0,.1);
        }
        .common {
            display: inline-block;
            margin: 0 30px 0 0;
            padding: 15px 0;
            cursor: pointer;
        }
        .common:hover {
            color: #40a9ff;
        }
        .content {
            margin-top: 20px;
        }
        .item {
            display: none;
        }
        .current {
            color: #1890ff;
            font-weight: 700;
            border-bottom: 3px solid #1890ff;
        }