I have been working with jquery for some of the baisc smooth scrolling functions in Codepen, everything seems works except for that navbar-shrink transition in codepen. So I deceided to try it in Visual Studio Code Editor and that's when things went wrong. It seems that my jquery code is no long working at all, even thought I checked file links in html and I think everything has been linked together and I did not change any of my code. Why my jquery code is not working at all. I started off withe bootstrap 4 starting template and what could I possible did wrong, can anyone take a look at my code and give me some feedback, appreciated.
$(document).ready(function () {
var scrollLink = $('.scroll');
scrollLink.click(function (e) {
e.preventDefault();
$('html, body').animate({
scrollTop: $(this.hash).offset().top
}, 900)
})
$(window).scroll(function () {
var scrollbarLocation = $(this).scrollTop();
if ($('.navbar').offset().top > 100) {
$('.navbar').addClass('navbar-shrink');
} else {
$('.navbar').removeClass('navbar-shrink');
}
scrollLink.each(function () {
var sectionOffset = $(this.hash).offset().top;
if (sectionOffset <= scrollbarLocation) {
$(this).parent().addClass('active');
$(this).parent().siblings().removeClass('active');
}
})
})
})section {
width: 100%;
height: 900px;
}
#home {
background-color: lightblue;
}
#about {
background-color: lightsalmon;
}
#contact {
background-color: lightgray;
}
.active {
background-color: blue !important;
color: #FFF !important;
}
* {
transition: all .4s ease-in 0s;
}
.navbar-shrink {
height: 45px;
/* background-color: transparent !important; */
}<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css"
integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<link rel="stylesheet" href="style.css">
<title>Hello, world!</title>
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-light bg-light fixed-top transition">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav"
aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNav">
<ul class="navbar-nav ml-auto">
<li class="nav-item active">
<a class="nav-link scroll" href="#home">Home</a>
</li>
<li class="nav-item">
<a class="nav-link scroll" href="#about">About</a>
</li>
<li class="nav-item">
<a class="nav-link scroll" href="#contact">Contact</a>
</li>
</ul>
</div>
</nav>
<section id='home'>Home</section>
<section id='about'>About</section>
<section id='contact'>Contact</section>
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js"
integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN"
crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"
integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q"
crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"
integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl"
crossorigin="anonymous"></script>
<script src='main.js'>
</script>
</body>
</html>You are using slim version of jQuery without animate and many other functions.
Read here jquery : $().animate() is not a function
This fixes problem: