JSFiddle - React, Tailwind, and code Playground

by Lucas Reta

HTML

<nav>
    <ul>
        <li data-scroll-to="1">1</li>
        <li data-scroll-to="2">2</li>
        <li data-scroll-to="3">3</li>
        <li data-scroll-to="4">4</li>
        <li data-scroll-to="5">5</li>
        <li data-scroll-to="6">6</li>
        <li data-scroll-to="7">7</li>
        <li data-scroll-to="8">8</li>
    </ul>
</nav>
<section id="s1" class="odd">1</section>
<section id="s2">2</section>
<section id="s3" class="odd">3</section>
<section id="s4">4</section>
<section id="s5" class="odd">5</section>
<section id="s6">6</section>
<section id="s7" class="odd">7</section>
<section id="s8">8</section>

CSS

section {
    width: 300px;
    height: 200px;
    background: #444;
    margin: 10px auto;
    padding-top: 20px;
    text-align: center;
}
.odd {
    background: #777;
}
.selected {
    color: #f32;
}
nav {
    background: #000;
    position: fixed;
    height: 50px;
    width: 100%;
    color: #fff;
    left: 0;
    top: 0;
}
nav ul {
    margin: 10px auto;
    width: 240px;
}
nav ul li {
    display: inline-block;
    cursor: pointer;
    margin: 0 6px;
}
nav ul li:hover {
    color: #f32;
}
body {
    font-family: Tahoma;
    padding-top: 60px;
}

JavaScript

$("li").each(function () {
    $(this).click(function (e) {

        $("li").each(function () {
            $(this).removeClass('selected');
        });
        $(this).addClass('selected');

        var scrollSpeed = 2000;
        var scrollTop = $(window).scrollTop();
        var id = $(this).attr('data-scroll-to');

        var goTo = $('#s' + id).offset().top - 50;
        // Less 50, in this case, because that is the nav's height

        e.preventDefault();
        $("html, body").stop().animate({
            scrollTop: goTo
        }, scrollSpeed);

    });
});