I am new to JavaScript and eager to learn the basics.
I have been attempting to incorporate the code found at this link into my project, but I am struggling to get it to work properly. Can someone please assist me in identifying where I might be making a mistake?
While the CSS loads correctly, the transitions do not seem to function when I preview the file locally in my browser. Oddly enough, everything works perfectly fine on Codepen, so I am uncertain as to what steps I may be missing in implementing the JavaScript portion.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link href="style.css" rel="stylesheet">
</head>
<body>
<div class="panel" data-color="white">
<div>
<h1>Magic scrolling colours</h1>
<p>Scroll to animate the background colour of the body as a full height panel becomes visible.</p>
<p>I have tried to comment the code, particurly the JavaScript, as much as possible. I hope it's clear to understand.</p>
<p>If you have any questions my twitter is <a href="https://twitter.com/daveredfern">@daveredfern</a>.</p>
</div>
</div>
<div class="panel" data-color="violet">
<h2>Violet panel</h2>
</div>
<div class="panel" data-color="indigo">
<h2>Indigo panel</h2>
</div>
<div class="panel" data-color="blue">
<h2>Blue panel</h2>
</div>
<div class="panel" data-color="green">
<h2>Green panel</h2>
</div>
<div class="panel" data-color="yellow">
<h2>Yellow panel</h2>
</div>
<div class="panel" data-color="orange">
<h2>Orange panel</h2>
</div>
<div class="panel" data-color="red">
<h2>Red panel</h2>
</div>
<script>
<script>
jQuery(function($){
$(window).scroll(function() {
// selectors
var $window = $(window),
$body = $('body'),
$panel = $('.panel');
// Change 33% earlier than scroll position so colour is there when you arrive.
var scroll = $window.scrollTop() + ($window.height() / 3);
$panel.each(function () {
var $this = $(this);
// if position is within range of this panel.
// So position of (position of top of div <= scroll position) && (position of bottom of div > scroll position).
// Remember we set the scroll to 33% earlier in scroll var.
if ($this.position().top <= scroll && $this.position().top + $this.height() > scroll) {
// Remove all classes on body with color-
$body.removeClass(function (index, css) {
return (css.match (/(^|\s)color-\S+/g) || []).join(' ');
});
// Add class of currently active div
$body.addClass('color-' + $(this).data('color'));
}
});
}).scroll();
});
</script>
</body>
</html>/* Setting fade transition and default settings */
body {
color: #000;
background-color: #f4f4f4;
transition: background-color 1s ease;
}
/* panel styles */
.panel {
/* min height incase content is higher than window height */
min-height: 100vh;
display: flex;
justify-content: space-around;
align-items: center;
font-family: sans-serif;
/* outline: 10px solid hotpink; */
/* turn above on to see the edge of panels */
}
/* colours */
.color-violet {
background-color: #7A4EAB;
}
.color-indigo {
background-color: #4332CF;
}
.color-blue {
background-color: #2F8FED;
}
.color-green {
background-color: #4DCF42;
}
.color-yellow {
background-color: #FAEB33;
}
.color-orange {
background-color: #F19031;
}
.color-red {
background-color: #F2293A;
}
/* styling for demo, can ignore */
body {
text-align: center;
font-size: 120%;
line-height: 1.618;
}
h1, h2 {
font-size: 3em;
letter-spacing: -0.05em;
line-height: 1.1;
}
p {
max-width: 30em;
margin-bottom: 1.618em;
}
a {
color: #4332CF;
}