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Change text color while scrolling
P粉983021177
P粉983021177 2024-03-28 22:55:23
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I'm making a portfolio website and I want my fixed text to change its color in some parts, how can I do that? I can't post my code because it's too big and long, but it would be great if you could give a code example, this is what it looks like (https://olaolu.dev), you can see how the buttons and names are in Change color while scrolling :)

P. Please use js to do it, thank you!

I tried to find information but found nothing :(

<!doctype html>
<html>
<head>
    <link rel="stylesheet" href="/b/cs.css">
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/font/bootstrap-icons.css">
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
</head>
<body>

    <section class="section-top active" id="s1">
        
        <div class="details">
            <div class="top">
                <h2>Faxraddin</h2>
                <div class="lists">
                    <div class="nav-btn" id="nav-icon1" onclick="document.getElementById('nav-icon1').classList.toggle('open')">
                        <span></span>
                        <span></span>
                        <span></span>
                    </div>
                </div>
                <div class="hide-it">
                    <div class="hide1">
                        <div class="p1">
                            <a class="hide1-btn">My Work</a>
                            <a class="hide1-btn">My Shelf</a>
                            <a class="hide1-btn">My Resume</a>
                        </div>
                         
                        <div class="p2">
                            <a class="hide-span">SAY HELLO</a>
                            <a class="hide-span">[email protected]</a>
                            <a class="hide-span">t/me.com</a>
                        </div>
                    </div>
                </div>
            </div>

            <div class="first-info">
                <div class="first-sec">
                    <h1>Frontend</br> Developer.</h1>
                    <h3 class="profession-info">I like to craft solid and scalable frontend products with great user experiences.</h3>
                </div>
                <img class="my-img" src="/b/images/Screenshot 2022-11-04 at 19.35.20.png">
            </div>

            <div class="some-info">
                <div class="a1">
                    <span>Highly skilled at progressive
                enhancement, design systems &
                UI Engineering.
                    </span>
                    <span>Over a decade of experience
                building products for clients
                across several countries.
                    </span>
                </div>

                <div class="btn-container">
                    <ul>
                        <a class="a" href="#s1"><div class="btn"></div></a>
                        <a class="a" href="#s2"><div class="btn"></div></a>
                        <a class="a" href="#s3"><div class="btn"></div></a>
                        <a class="a" href="#s4"><div class="btn"></div></a>
                        <a class="a" href="#s5"><div class="btn"></div></a>
                    </ul>
                </div>
            </div>

        </div>
    </section>

     
     <section class="what-do" id="s2">
         <div class="my-info">
            <div class="what-doing" id="i1">
                <h1>Design</h1>
                <p>
                    I'm probably not the typical designer positioned behind an Illustrator artboard adjusting pixels, but I design. Immersed in stylesheets tweaking font sizes and contemplating layouts is where you'll find me (~_^). I'm committed to creating fluent user experiences while staying fashionable.
                </p>
            </div>
            <div class="what-doing" id="i2">
                <h1>Engineering</h1>
                <p>
                    In building JavaScript applications, I'm equipped with just the right tools, and can absolutely function independently of them to deliver fast, resilient solutions optimized for scale — performance and scalabilty are priorities on my radar
                </p>
            </div>
         </div>
     </section>

    <section class="exp" id="s3">
        <div class="e1">
            <div class="exp-info">
                <h2>Over the</br> past 3 years,</h2>
                <p>I've built products for companies and businesses around the globe ranging from marketing websites to complex solutions and enterprise apps with focus on fast, elegant and accessible user experiences.</p>
                <p>Currently, I work at Shopify as a Senior UX Developer and Accessibility advocate crafting thoughtful and inclusive experiences that adhere to web standards for over a million merchants across the world.</p>
                <p>Before now, I was Principal Frontend Engineer at hellotax, where I worked on a suite of tools and services tailored at providing fast, automated VAT Registration / filings & Returns solutions for multi-channel sellers across Europe.</p>
                <p>Prior to hellotax, I was Senior frontend engineering contractor with Pixel2HTML, building JavaScript applications and interfaces for orgs and individuals.</p>
                <p>I once also led the frontend team at a Russian startup, Conectar through building multiple React applications into a single robust learning platform.</p>
            </div>
            <img class="exp-img" src="/b/images/2634454 copy.pdf">
        </div>
    </section>

    <section class="done" id="s4">
        <div class="grid">
            <div class="what-done">
                <div class="w1">
                    <h1>I buld & </br> deign stuff</h1>
                    <p>Open source 
                    projects, web apps 
                    and experimentals.
                    </p>
                    <button class="done-btn">see my work ---></button>
                </div>
                <div class="w2">
                    <h1>I write,</br>sometimes</h1>
                    <p>About design, 
                    frontend dev, 
                    learning and life.
                    </p>
                    <button class="done-btn">read my article ---></button>
                </div>
            </div>
        </div>
    </section>

    <section id="s5" class="send-me">
        <div class="send-container">
            <div class="send-top">
                <h1>Send me a message!</h1>
                <p>Got a question or proposal, or just want</br>
                    to say hello? Go ahead.</p>
            </div>
            <div class="send-inputs">
                <div class="l">
                    <label>Your Name</label>
                    <input type="text" placeholder="Enter your name">
                </div>

                <div class="l">
                    <label>Email Address</label>
                    <input type="text" placeholder="Enter your address">
                </div>
            </div>
            <div class="send-final">
                <input type="text" placeholder="Hi,i think we have to work together">
                <button class="shoot">SHOOT ---></button>
            </div>
        </div>
    </section>

    <section class="end-1" id="s6">
        <div class="end-container">
            <div class="end-info">
                <div class="e2" id="ll">
                    <span>SAY HELLO</span>
                    <span>[email protected]</span>
                    <span>t.me/mrolaolu</span>
                </div>
                <div class="e2">
                    <span>My Work</span>
                    <span>My Shelf</span>
                    <span>My Resume</span>
                </div>
            </div>
            <h2 class="end-link">© Faxraddin Olawuyi 2022</h2>
        </div>
    </section>

    <script src="/b/js.js"></script>
</body>
</html>


    body {
    margin: 0;
    padding: 0;
    scroll-snap-type: y mandatory;
}

html{
    scroll-behavior: smooth;
}

.bar1, .bar2, .bar3 {
    width: 2.5vw;
    height: .35vw;
    background-color: #333;
    margin: 6px 0;
    transition: 0.2s;
}


.change .bar1 {
    transform: translate(0, 11px) rotate(-45deg);
}

.change .bar2 {opacity: 0;}

.change .bar3 {
    transform: translate(0, -11px) rotate(45deg);
}

section{
    scroll-snap-align: start;
}

.section-top{
    height: 47vw;
    padding-bottom: 10vw;
}

.details{
    background-color:#0b2361;
    background-repeat: no-repeat;
    background-size: 100vw 100%;
}

.top {
    display: flex;
    justify-content: space-between;
    padding: 1vw;
    padding-bottom: 6vw;
}

.top h2{
    font-size: 2.2vw;
    margin: 0;
    margin-top: 30px;
    margin-left: 60px;
    color:#e9ecf4;
    position: fixed;
    z-index: 3;
}

.nav-btn {
    background: none;
    border: none;
    font-size: 3vw;
    cursor: pointer;
    position: fixed;
    right: 4.5vw;
    top:4vw;
    z-index: 3;
    padding-bottom: 2vw;
}

#l1{
    width: 3vw;
}

#l2{
    width: 2vw;
}

.first-info{
    display: flex;
    justify-content: space-between;
    width: 70vw;
    margin-left: 10vw ;
    padding-top: 30px;
}

.first-sec h1{
    font-size: 4.4vw;
    color: #f1554c;
}

.first-sec h3{
    width: 35vw;
    margin-top: -2vw;
    font-size: 1.5vw;
    color:#e9ecf4;
}

.my-img{
    width: 24vw;
    margin-top: 10px;
}

.a1{
    display: flex;
    justify-content: space-between;
    width: 35vw;
    margin-left: 10vw ;
    padding-top: 30px;
    color:#f1554c;
    margin-top: 20px;
    padding-bottom: 6.5vw;
    font-size: 1.3vw;
}

.a1 span{
    width: 45%;
    font-size: 1vw;
}


.some-info {
    display: flex;
    justify-content: space-between;
    width: 93vw;
}

.btn-container{
    position: fixed;
    z-index: 1;
    right: 0;
    padding-right: 5.5vw;
    margin-top: -3vw;
    
}

.btn-container ul{
    display: flex;
    flex-direction: column;
    align-items: center;
}

.btn{
    margin:.7vw;
    cursor: pointer;
    z-index: 1;
    width: .2vw;
    height: .2vw;
    background-color: black;
    transform: rotate(45deg);
    border-style:solid;
    transition: 0.3s;
}

.what-do{
    background-repeat: no-repeat;
    background-size: 100vw 100%;
    height: 840px;
    background-color: #e9ecf4;
}

.my-info{    
    display: flex;
    margin-left: 7vw ;

    position: relative;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.what-doing{
    width: 50%;
}

.what-doing h1{
    font-size: 4vw;
    color: #f1554c;
}

.what-doing p{
    font-size: 1.2vw;
    width: 30vw;
    margin-top: -2vw;
    color:#0b2361;
}

#i2{
    margin-top: 17vw;
    margin-left: 1vw;
}

.exp{
    height: 840px;
    background-color:#0b2361
}

.e1{
    display: flex;
    justify-content: space-between;
    width: 85vw;
    padding-top: 1vw;
    margin-left: -8vw;
    padding-bottom: 2vw;

    position: relative;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.exp-info{
    display: flex;
    flex-direction: column;
    margin-left: 10vw;
    color: #e9ecf4;
}

.exp-info h2{
    font-size: 4.5vw;
    margin-bottom: 0;
}

.exp-info p{
    width: 25vw;
    font-size: 1.1vw;
}

.exp-img{
    height: 40vw;
    margin-top: 6vw;
}

.done{
    height: 840px;
    background-color:#e9ecf4;
}

.grid{
    position: relative;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.what-done{
    display: flex;
    margin: auto;
    width: 90vw;
    height: 40vw;
    background-color: whitesmoke;
}

.w1{
    width: 50%;
    text-align: left;
    padding: 5vw;

}

.w2{
    width: 50%;
    text-align: left;
    padding: 5vw;
    border-left-style: solid;
    border-width: thin;
}

.w1 h1{
    font-size: 3.3vw;
    color: #f1554c;
}

.w1 p{
    font-size: 2vw;
    color:#0b2361;
}

.w2 h1{
    font-size: 3.3vw;
    color: #f1554c;
}

.w2 p{
    font-size: 2vw;
    color: #0b2361;
}

.done-btn{
    background: none;
    cursor: pointer;
    font-size: 1.3vw;
    padding: 1.3vw 5vw 1.3vw 5vw;
    margin-top: 3vw;
    color: #f1554c;
}

.hide-it{
    position: absolute;
    transition: 0.2s;
    background-color: white;
    height: 0;
    width: 25vw;
    position: fixed;
    right: 3vw;
    top:3vw;
    color: white;
}

.hide1{
    display: flex;
    flex-direction: column;
}

.p1{
    display: flex;
    flex-direction: column;
    padding-top: 6vw;
    padding-left: 2.7vw;
    transition: 0.1s;
    visibility: hidden;
    transition: 0.1;
}

.hide1-btn{
    border: none;
    background: none;
    font-size: 1.4vw;
    text-align: left;
    padding: 10px;
}

.p2{
    display: flex;
    flex-direction: column;
    padding-top: 6vw;
    padding-left: 2.7vw;
    transition: 0.1s;
    visibility: hidden;
    transition: 0.9;
}

.hode-1{
    font-size: 1.4vw;
    text-align: left;
    padding: 10px;
}

.hide-span{
    font-size: 1.4vw;
    text-align: left;
    padding: 10px;
}

.active{
    visibility: visible;
    height: 34vw;
    z-index: 2;
    color: black;
}

.active2{
    visibility: visible;
}
 
.btn.active1{
    background-color: white;
    width: .7vw;
    height: .7vw;
    transform: rotate(0deg);
    border-radius: 4px;
}

#nav-icon1 {
    width: 4vw;
    height: 3vw;
    -webkit-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -o-transform: rotate(0deg);
    transform: rotate(0deg);
    -webkit-transition: .5s ease-in-out;
    -moz-transition: .5s ease-in-out;
    -o-transition: .5s ease-in-out;
    transition: .5s ease-in-out;
    cursor: pointer;
  }
  
#nav-icon1 span {
    display: block;
    position: absolute;
    height: 3px;
    width: 3.5vw;
    background: black;
    border-radius: 9px;
    opacity: 1;
    left: 0;
    -webkit-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -o-transform: rotate(0deg);
    transform: rotate(0deg);
    -webkit-transition: .25s ease-in-out;
    -moz-transition: .25s ease-in-out;
    -o-transition: .25s ease-in-out;
    transition: .25s ease-in-out;
  }
  
  #nav-icon1 span:nth-child(1) {
    top: 0px;
  }
  
  #nav-icon1 span:nth-child(2) {
    top: 18px;
  }
  
  #nav-icon1 span:nth-child(3) {
    top: 36px;
  }
  
  #nav-icon1.open span:nth-child(1) {
    top: 18px;
    -webkit-transform: rotate(135deg);
    -moz-transform: rotate(135deg);
    -o-transform: rotate(135deg);
    transform: rotate(135deg);
  }
  
  #nav-icon1.open span:nth-child(2) {
    opacity: 0;
    left: -60px;
  }
  
  #nav-icon1.open span:nth-child(3) {
    top: 18px;
    -webkit-transform: rotate(-135deg);
    -moz-transform: rotate(-135deg);
    -o-transform: rotate(-135deg);
    transform: rotate(-135deg);
  }
  
.send-me{
    height: 840px;
    background-color: #e9ecf4;
    display: flex;
    justify-content: center;
    align-items: center;
}

.send-top h1{
    font-size: 3.3vw;
    text-align: center;
    color: #f1554c;
}

.send-top p{
    font-size: 1.7vw;
    color:#0b2361;
    text-align: center;
    margin-top: -2vw;
    padding-bottom: 5vw;
}

.send-inputs{
    display: flex;
    justify-content: space-between;
    width: 50vw;
}

.send-inputs input{
    outline: none;
    padding: 1vw 0vw 1vw 0vw;
    width: 21vw;
    height: 2vw;
    font-size: 1.3vw;
    border-bottom: 5px solid black;
    border-width: thin;
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
}

.send-inputs label{
    font-size: 1vw;
}

.l{
    display: flex;
    flex-direction: column;
}

.send-final{
    padding-top: 4vw;
    width: 50.5vw;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;    
}

.send-final input{
    background: none;
    font-size: 1.3vw;
    width: 100%;
    outline: none;
    padding: 1vw 0vw 1vw 0vw;
    height: 2vw;
    border-width: thin;
    border-bottom: 5px solid black;
    background: none;
    border-width: thin;
    border-top: none;
    border-left: none;
    border-right: none;
}

.shoot{
    border-width: thin;
    font-size: 1.3vw;
    border-color: black;
    margin-top: 4vw;
    width: 20vw;
    height: 4vw;

    background: none;
    cursor: pointer;
    font-size: 1.3vw;
    padding: 1.3vw 5vw 1.3vw 5vw;
}

.end-1{
    background-color: #0b2361;
    height: 830px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.end-container{
    display: flex;
    flex-direction: column;
    width: 80vw;
}

.end-info{
    border-width: thin;
    border-bottom: 5px solid #e9ecf4;
    background: none;
    border-width: thin;
    border-top: none;
    border-left: none;
    border-right: none;

    display: flex;
}

.e2{
    display: flex;
    flex-direction: column;
    font-size: 1.5vw;
    color: #e9ecf4;
    padding: 4vw 0vw 8vw 0vw;
}

.e2 span{
    padding-top: 1.5vw;
}

#ll{
    margin-top:-3vw;
    padding-right: 19vw;
}

.end-link{
    color: #e9ecf4;
    padding-top: 3vw;
}

P粉983021177
P粉983021177

reply all(1)
P粉884548619
P粉8845486192024-03-29 13:33:33 1 floor

I think what you need is an intersection observer. Intersection Observer allows you to "see" targets and react when they become visible.

I've created a small example to demonstrate this. We are observing Second Section. When it's visible, we change the color to purple. When it's not visible, we change it back to black. 

const title = document.querySelector('.topbar__title');
const sectionOne = document.querySelector('.section--one');
const sectionTwo = document.querySelector('.section--two');

const observer = new IntersectionObserver((entry, observer) => {
  entry[0].isIntersecting > 0 ?
    title.style.color = sectionTwo.getAttribute('data-color') :
    title.style.color = sectionOne.getAttribute('data-color')
});

observer.observe(sectionTwo);
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.topbar {
  position: fixed;
  top: 0;
  left: 0;
  padding: 1rem;
  width: 100%;
  background-color: white;
}

.section {
  height: 150vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.section--one {
  background-color: white;
}

.section--two {
  background-color: rgb(255 0 0 / 5%);
}

  
Title






  
Section One






  
Section Two

Of course you can observe multiple sections, or change a class instead of styling it with JS. This is just a simple example...

MDN has some good information about Intersection Observers

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