Develop Reference

How To Create A Client-Sided Search Bar Using Javascript

I'm trying to create a client-sided search bar using javascript and I'm not sure how to do that and get it to function properly. I'm trying to create one without using PHP since I have no experience with server-sided programming. How would you create one that works with the client-side? Do you need an index for the search results and an API as well? And how would you use an index and an API? The goal of the search bar is to find terms or words that are present on the webpage is what I'm trying to achieve with it. It's to give the user a chance to search for the name of an article present in the webpage. Here is my current code if you want to see it: https://jsfiddle.net/snt87eg9/1/
<div class="topnav">
<a class="active" href="#home">Home</a>
News
Contact
About
<div class="search-container">
<form action="/action_page.php">
<input type="text" placeholder="Search.." name="search">
<button type="submit"><i class="fa fa-search"></i></button>
</form>
</div>
</div>
<div class="header">
<div id ="header">
<h2 style="text-indent: 1em; font-family: Helvetica; color: blue;">Articles</h2>
</div></div><br>
<div class="row">
<div class="leftcolumn">
<div class="card">
<div id="Title">
<h2>Article 1</h2>
<h5>Date</h5>
<p>Some text over there.,.. </p>
</div>
</div>
</div>
</div>
<div class="row">
<div class="card">
<div id="Title2">
<h2>Article 2</h2>
<h5>Date</h5>
<p> Some text over here..... </p>
</div>
</div>
</div>
```

You need a way to select the searchbar, articles and article titles,
lets say you give classes article and article-title and give the searchbar id="searchbar"
Document should look like this:
<div class="topnav">
<a class="active" href="#home">Home</a>
News
Contact
About
<div class="search-container">
<form action="/action_page.php">
<input type="text" placeholder="Search.." name="search" id="searchbar">
<button type="submit"><i class="fa fa-search"></i></button>
</form>
</div>
</div>
<div class="header">
<div id="header">
<h2 style="text-indent: 1em; font-family: Helvetica; color: blue;">Articles</h2>
</div>
</div><br>
<div class="row article">
<div class="leftcolumn">
<div class="card">
<div id="Title">
<a href="#">
<h2 class="article-title">Article 1</h2>
</a>
<h5>Date</h5>
<p>Some text over there.,.. </p>
</div>
</div>
</div>
</div>
<div class="row article">
<div class="card">
<div id="Title2">
<a href="#">
<h2 class="article-title">Article 2</h2>
</a>
<h5>Date</h5>
<p> Some text over here..... </p>
</div>
</div>
</div>
Here's the way to filter out what you wrote in the searchbar:
<script>
$('#searchbar').keyup(function(){
let articles = $('.article'); //get all elements with class="article"
let keyword = $(this).val().toLowerCase(); //get the content of the searchbar
if(keyword == "") //show all elements if searchbar is empty
articles.show();
else{ //else loop through articles and check if the keyword is in the title div
articles.each(function(element) {
let title = $(this).find('.article-title').text().toLowerCase();
(title.indexOf(keyword) >= 0) ? $(this).show() : $(this).hide();
});
}
});
</script>
The script uses jQuery , you can put this before the script if you don't have it already imported :
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>

I just took the time to make a client-side search javascript function. But if you are not too familiar with javascript try to learn a little bit more before implementing this type of things.
$(document).ready(function() {
$("#header").hide().fadeIn(2000);
});
$(document).ready(function() {
$("#title").hide().fadeIn(2000);
});
$(document).ready(function() {
$("#footer").hide().fadeIn(2000);
});
function searchInArticles(word) {
const articles = document.querySelectorAll(".card");
articles.forEach(article => {
if (article.innerHTML.includes(word)) {
article.style.display = "block";
article.scrollIntoView();
} else {
article.style.display = "none";
}
})
}
searchInArticles("Yes");
//searchInArticles("Some");
/* Add a gray background color with some padding */
body {
font-family: Arial;
padding: 20px;
background: #32cd32;
}
/* Header/Blog Title */
.header {
padding: 30px;
font-size: 40px;
text-align: center;
background: #7df9ff;
}
/* Create two unequal columns that floats next to each other */
/* Left column */
.leftcolumn {
float: left;
width: 100%;
}
/* Add a card effect for articles */
.card {
background-color: #87ceeb;
padding: 20px;
margin-top: 20px;
}
/* Clear floats after the columns */
.row:after {
content: "";
display: table;
clear: both;
}
/* Footer */
.footer {
padding: 20px;
text-align: center;
background: #00bfff;
margin-top: 20px;
}
.topnav {
overflow: hidden;
background-color: #333;
}
.topnav a {
float: left;
color: #f2f2f2;
text-align: center;
padding: 14px 16px;
text-decoration: none;
font-size: 17px;
}
.topnav a:hover {
background-color: #ddd;
color: black;
}
.topnav a.active {
background-color: #04AA6D;
color: white;
}
/* Responsive layout - when the screen is less than 800px wide, make the two columns stack on top of each other instead of next to each other */
#media screen and (max-width: 800px) {
.leftcolumn,
.rightcolumn {
width: 100%;
padding: 0;
}
}
.topnav .search-container {
float: right;
}
.topnav input[type=text] {
padding: 6px;
margin-top: 8px;
font-size: 17px;
border: none;
}
.topnav .search-container button {
float: right;
padding: 6px 10px;
margin-top: 8px;
margin-right: 16px;
background: #ddd;
font-size: 17px;
border: none;
cursor: pointer;
}
.topnav .search-container button:hover {
background: #ccc;
}
#media screen and (max-width: 600px) {
.topnav .search-container {
float: none;
}
.topnav a,
.topnav input[type=text],
.topnav .search-container button {
float: none;
display: block;
text-align: left;
width: 100%;
margin: 0;
padding: 14px;
}
.topnav input[type=text] {
border: 1px solid #ccc;
}
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
</head>
<body>
<!-- My link -->
<div class="topnav">
<a class="active" href="#home">Home</a>
News
Contact
About
<div class="search-container">
<form action="/action_page.php">
<input type="text" placeholder="Search.." name="search">
<button type="submit"><i class="fa fa-search"></i></button>
</form>
</div>
</div>
<div class="header">
<div id="header">
<h2 style="text-indent: 1em; font-family: Helvetica; color: blue;">Articles</h2>
</div>
</div><br>
<div class="row">
<div class="leftcolumn">
<div class="card">
<div id="Title">
<a href="#">
<h2>Article 1</h2>
</a>
<h5>Date</h5>
<p>Yes text over there.,.. </p>
</div>
</div>
</div>
</div>
<div class="row">
<div class="card">
<div id="Title2">
<a href="#">
<h2>Article 2</h2>
</a>
<h5>Date</h5>
<p> Some text over here..... </p>
</div>
</div>
</div>
<div class="row">
<div class="card">
<div id="Title2">
<a href="#">
<h2>Article 2</h2>
</a>
<h5>Date</h5>
<p> Some text over here..... </p>
</div>
</div>
</div>
<div class="row">
<div class="card">
<div id="Title2">
<a href="#">
<h2>Article 2</h2>
</a>
<h5>Date</h5>
<p> Yes text over here..... </p>
</div>
</div>
</div>
<div class="row">
<div class="card">
<div id="Title2">
<a href="#">
<h2>Article 2</h2>
</a>
<h5>Date</h5>
<p> Some text over here..... </p>
</div>
</div>
</div>
<div class="row">
<div class="card">
<div id="Title2">
<a href="#">
<h2>Article 2</h2>
</a>
<h5>Date</h5>
<p> Some text over here..... </p>
</div>
</div>
</div>
<div class="row">
<div class="card">
<div id="Title2">
<a href="#">
<h2>Article 2</h2>
</a>
<h5>Date</h5>
<p> Some text over here..... </p>
</div>
</div>
</div>
<div class="footer">
<div id="footer">
</div>
</div>
</body>
</html>

Why jQuery .scroll() method is not working with .addClass() method

I am trying to add a class named .nav-color if window is scrolled greater than or equal to 50px with jQuery (jQuery version 3.6.0).
For that I have crated a .nav-color class and trying to add it to #navigation with jQuery .addClass() method but somehow it is not working.
My jQuery Code:
$(document).ready(function() {
$(body).scroll(function() {
if ($(body).scroll() > 20) {
$("#navigation").addClass("nav-color");
}
else {
$("#navigation").removeClass("nav-color");
}
});
});
Why is that happening? Why the code is not working?
Here is my full code:
<!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=1.0">
<link rel="icon" href="./images/favicon.ico">
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.15.3/css/all.css" integrity="sha384-SZXxX4whJ79/gErwcOYf+zWLeJdY/qpuqC4cAa9rOGUstPomtqpuNWT9wdPEn2fk" crossorigin="anonymous">
<link href="https://cdn.jsdelivr.net/npm/bootstrap#5.0.1/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-+0n0xVW2eSR5OomGNYDnhzAbDsOXxcvSN1TPprVMTNDbiYZCxYbOOl7+AMvyTG2x" crossorigin="anonymous">
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
font-family: sans-serif;
text-decoration: none;
list-style: none;
}
header {
background: linear-gradient(rgba(45, 44, 48, 0.753), rgba(45, 44, 48, 0.753)), url(./images/bg-masthead.jpg);
height: 100vh;
background-position: center;
background-repeat: no-repeat;
background-size: cover;
color: white;
font-weight: bold;
}
.navbar-brand {
font-size: 20px;
}
.navbar {
position: fixed;
width: 100%;
top: 0;
left: 0;
}
#header-texts {
height: 90vh;
align-items: center;
margin-top: 60px;
height: 90vh;
}
#header-texts-1 {
font-size: 55px;
}
#header-texts-2 {
font-size: 20px;
font-weight: normal;
}
#header-btn {
background: #f24516;
color: white;
padding: 15px 20px;
border-radius: 30px;
letter-spacing: 0.8px;
}
#s-5:hover {
border-bottom: 1px solid #f24516;
}
.nav-color {
background-color: #ffffff;
color: black;
}
/* ========================= Responsive ========================= */
#media (max-width: 540px) {
#header-texts-1 {
font-size: 30px;
}
#header-texts-2 {
font-size: 16px;
}
}
#media (min-width: 992px) {
.container {
width: 100vw !important;
}
.navbar-expand-lg {
background: transparent !important;
}
a {
color: white !important;
}
}
</style>
<title>Creative</title>
</head>
<body>
<header>
<div class="container">
<div class="row">
<div class="col">
<nav class="navbar navbar-expand-lg navbar-light bg-light" id="navigation">
<div class="container-fluid">
<a class="navbar-brand ms-lg-5" href="#">Start Bootstrap</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse justify-content-end" id="navbarNavAltMarkup">
<div class="navbar-nav me-lg-5" id="nav-items">
<a class="nav-link active" aria-current="page" href="#">Home</a>
<a class="nav-link" href="#">About</a>
<a class="nav-link" href="#">Services</a>
<a class="nav-link" href="#">Protfolio</a>
<a class="nav-link" href="#">Contact</a>
</div>
</div>
</div>
</nav>
</div>
</div>
<div class="row text-center" id="header-texts">
<div class="col">
<p id="header-texts-1">YOUR FAVORITE SOURCE OF FREE<br>BOOTSTRAP THEMES</p>
<hr class="mb-4" style="width: 5%; margin: auto; height: 5px; border: none; color: #ff0000; background-color:#ff0000; opacity: 1;">
<p id="header-texts-2">Start Bootstrap can help you build better websites using the Bootstrap<br>framework! Just download a theme and start customizing, no strings attached!</p>
<button class="btn mt-4" id="header-btn">FIND OUT MORE</button>
</div>
</div>
</div>
</header>
<!-- ========================= Section 02 ========================= -->
<div class="sec-2 text-light text-center py-5" style="background-color: #f4623a;">
<p class="display-6">We've got what you need!</p>
<hr class="mb-4" style="width: 5%; margin: auto; height: 3px; border: none; color: #fff; background-color:#fff;
opacity: 1;">
<p class="w-md-50 m-auto">Start Bootstrap has everything you need to get your new website up and running in no time! Choose one of our open source, free to download, and easy to use themes! No strings attached!</p>
<button class="btn mt-4 bg-light text-dark fw-bold" id="header-btn">GET STRATED!</button>
</div>
<!-- ========================= Section 03 ========================= -->
<div class="sec-3 py-5 my-5">
<div class="container text-center">
<h2>At your Service</h2>
<hr class="my-4" style="width: 5%; margin: auto; height: 3px; border: none; color: #f24516; background-color:#f24516;
opacity: 1;">
<div class="row text-center mt-5">
<div class="col-md">
<img src="./images/diamond.png" alt="">
<p class="fw-bold mt-3 mb-0" style="font-size: 22px;">Sturdy Themes</p>
<p>Our themes are updated regularly to keep them bug free!</p>
</div>
<div class="col-md">
<img src="./images/uptodate.png" alt="">
<p class="fw-bold mt-3 mb-0" style="font-size: 22px;">Up to Date</p>
<p>All dependencies are kept current to keep things fresh.</p>
</div>
<div class="col-md">
<img src="./images/globe.png" alt="">
<p class="fw-bold mt-3 mb-0" style="font-size: 22px;">Ready to Publish</p>
<p>You can use this design as is, or you can make changes!</p>
</div>
<div class="col-md">
<img src="./images/heart.png" alt="">
<p class="fw-bold mt-3 mb-0" style="font-size: 22px;">Made with Love</p>
<p>Is it really open source if it's not made with love?</p>
</div>
</div>
</div>
</div>
<!-- ========================= Section 04 ========================= -->
<div class="container-fluid">
<div class="row">
<div class="col-md px-0"><img class="w-100" src="./images/portfolio/thumbnails/1.jpg" alt=""></div>
<div class="col-md px-0"><img class="w-100" src="./images/portfolio/thumbnails/2.jpg" alt=""></div>
<div class="col-md px-0"><img class="w-100" src="./images/portfolio/thumbnails/3.jpg" alt=""></div>
</div>
<div class="row">
<div class="col-md px-0"><img class="w-100" src="./images/portfolio/thumbnails/4.jpg" alt=""></div>
<div class="col-md px-0"><img class="w-100" src="./images/portfolio/thumbnails/5.jpg" alt=""></div>
<div class="col-md px-0"><img class="w-100" src="./images/portfolio/thumbnails/6.jpg" alt=""></div>
</div>
<div class="row py-5" style="background-color: #343a40;">
<div class="col text-center py-5">
<h2 class="text-light">Free Download at Start Bootstrap!</h2>
<button class="btn mt-4 bg-light text-dark fw-bold" id="header-btn">DOWNLOAD NOW!</button>
</div>
</div>
</div>
<!-- ========================= Section 05 ========================= -->
<div class="container text-center py-5 my-5">
<h2>Let's Get In Touch!</h2>
<hr class="my-4" style="width: 5%; margin: auto; height: 3px; border: none; color: #f24516; background-color:#f24516;
opacity: 1;">
<p class="w-50 m-auto">Ready to start your next project with us? Give us a call or send us an email and we will get back to you as soon as possible!</p>
<div class="row w-50 m-auto mt-5">
<div class="col-md">
<img src="./images/phone.png" alt="">
<p>+1 (555) 123-4567</p>
</div>
<div class="col-md">
<img src="./images/email.png" alt="">
contact#yourwebsite.com
</div>
</div>
</div>
<!-- ========================= footer ========================= -->
<div class="container-fluid text-center py-5" style="background-color: #f8f9fa;">
<p class="mb-0">Copyright © 2021 - Dabananda Mitra</p>
</div>
<!-- ========================= JavaScript ========================= -->
<script src="https://cdn.jsdelivr.net/npm/bootstrap#5.0.1/dist/js/bootstrap.bundle.min.js" integrity="sha384-gtEjrD/SeCtmISkJkNUaaKMoLD0//ElJ19smozuHV6z3Iehds+3Ulb9Bn9Plx0x4" crossorigin="anonymous"></script>
<script src="https://code.jquery.com/jquery-3.6.0.min.js" integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4=" crossorigin="anonymous"></script>
<script>
$(document).ready(function() {
$(body).scroll(function() {
if ($(body).scroll() > 20) {
$("#navigation").addClass("nav-color");
}
else {
$("#navigation").removeClass("nav-color");
}
});
});
</script>
</body>
</html>

You can use scrollTop in the following way (and detect scroll for window, not body):
$(document).ready(function() {
$(window).scroll(function() {
if ($(this).scrollTop() > 20) {
$("#navigation").addClass("nav-color");
} else {
$("#navigation").removeClass("nav-color");
}
});
});
Applied to your snippet:
$(document).ready(function() {
$(window).scroll(function() {
if ($(this).scrollTop() > 20) {
$("#navigation").addClass("nav-color");
} else {
$("#navigation").removeClass("nav-color");
}
});
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<!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=1.0">
<link rel="icon" href="./images/favicon.ico">
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.15.3/css/all.css" integrity="sha384-SZXxX4whJ79/gErwcOYf+zWLeJdY/qpuqC4cAa9rOGUstPomtqpuNWT9wdPEn2fk" crossorigin="anonymous">
<link href="https://cdn.jsdelivr.net/npm/bootstrap#5.0.1/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-+0n0xVW2eSR5OomGNYDnhzAbDsOXxcvSN1TPprVMTNDbiYZCxYbOOl7+AMvyTG2x" crossorigin="anonymous">
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
font-family: sans-serif;
text-decoration: none;
list-style: none;
}
header {
background: linear-gradient(rgba(45, 44, 48, 0.753), rgba(45, 44, 48, 0.753)), url(./images/bg-masthead.jpg);
height: 100vh;
background-position: center;
background-repeat: no-repeat;
background-size: cover;
color: white;
font-weight: bold;
}
.navbar-brand {
font-size: 20px;
}
.navbar {
position: fixed;
width: 100%;
top: 0;
left: 0;
}
#header-texts {
height: 90vh;
align-items: center;
margin-top: 60px;
height: 90vh;
}
#header-texts-1 {
font-size: 55px;
}
#header-texts-2 {
font-size: 20px;
font-weight: normal;
}
#header-btn {
background: #f24516;
color: white;
padding: 15px 20px;
border-radius: 30px;
letter-spacing: 0.8px;
}
#s-5:hover {
border-bottom: 1px solid #f24516;
}
.nav-color {
background-color: #ffffff;
color: black;
}
/* ========================= Responsive ========================= */
#media (max-width: 540px) {
#header-texts-1 {
font-size: 30px;
}
#header-texts-2 {
font-size: 16px;
}
}
#media (min-width: 992px) {
.container {
width: 100vw !important;
}
.navbar-expand-lg {
background: transparent !important;
}
a {
color: white !important;
}
}
</style>
<title>Creative</title>
</head>
<body>
<header>
<div class="container">
<div class="row">
<div class="col">
<nav class="navbar navbar-expand-lg navbar-light bg-light" id="navigation">
<div class="container-fluid">
<a class="navbar-brand ms-lg-5" href="#">Start Bootstrap</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse justify-content-end" id="navbarNavAltMarkup">
<div class="navbar-nav me-lg-5" id="nav-items">
<a class="nav-link active" aria-current="page" href="#">Home</a>
<a class="nav-link" href="#">About</a>
<a class="nav-link" href="#">Services</a>
<a class="nav-link" href="#">Protfolio</a>
<a class="nav-link" href="#">Contact</a>
</div>
</div>
</div>
</nav>
</div>
</div>
<div class="row text-center" id="header-texts">
<div class="col">
<p id="header-texts-1">YOUR FAVORITE SOURCE OF FREE<br>BOOTSTRAP THEMES</p>
<hr class="mb-4" style="width: 5%; margin: auto; height: 5px; border: none; color: #ff0000; background-color:#ff0000; opacity: 1;">
<p id="header-texts-2">Start Bootstrap can help you build better websites using the Bootstrap<br>framework! Just download a theme and start customizing, no strings attached!</p>
<button class="btn mt-4" id="header-btn">FIND OUT MORE</button>
</div>
</div>
</div>
</header>
<!-- ========================= Section 02 ========================= -->
<div class="sec-2 text-light text-center py-5" style="background-color: #f4623a;">
<p class="display-6">We've got what you need!</p>
<hr class="mb-4" style="width: 5%; margin: auto; height: 3px; border: none; color: #fff; background-color:#fff;
opacity: 1;">
<p class="w-md-50 m-auto">Start Bootstrap has everything you need to get your new website up and running in no time! Choose one of our open source, free to download, and easy to use themes! No strings attached!</p>
<button class="btn mt-4 bg-light text-dark fw-bold" id="header-btn">GET STRATED!</button>
</div>
<!-- ========================= Section 03 ========================= -->
<div class="sec-3 py-5 my-5">
<div class="container text-center">
<h2>At your Service</h2>
<hr class="my-4" style="width: 5%; margin: auto; height: 3px; border: none; color: #f24516; background-color:#f24516;
opacity: 1;">
<div class="row text-center mt-5">
<div class="col-md">
<img src="./images/diamond.png" alt="">
<p class="fw-bold mt-3 mb-0" style="font-size: 22px;">Sturdy Themes</p>
<p>Our themes are updated regularly to keep them bug free!</p>
</div>
<div class="col-md">
<img src="./images/uptodate.png" alt="">
<p class="fw-bold mt-3 mb-0" style="font-size: 22px;">Up to Date</p>
<p>All dependencies are kept current to keep things fresh.</p>
</div>
<div class="col-md">
<img src="./images/globe.png" alt="">
<p class="fw-bold mt-3 mb-0" style="font-size: 22px;">Ready to Publish</p>
<p>You can use this design as is, or you can make changes!</p>
</div>
<div class="col-md">
<img src="./images/heart.png" alt="">
<p class="fw-bold mt-3 mb-0" style="font-size: 22px;">Made with Love</p>
<p>Is it really open source if it's not made with love?</p>
</div>
</div>
</div>
</div>
<!-- ========================= Section 04 ========================= -->
<div class="container-fluid">
<div class="row">
<div class="col-md px-0"><img class="w-100" src="./images/portfolio/thumbnails/1.jpg" alt=""></div>
<div class="col-md px-0"><img class="w-100" src="./images/portfolio/thumbnails/2.jpg" alt=""></div>
<div class="col-md px-0"><img class="w-100" src="./images/portfolio/thumbnails/3.jpg" alt=""></div>
</div>
<div class="row">
<div class="col-md px-0"><img class="w-100" src="./images/portfolio/thumbnails/4.jpg" alt=""></div>
<div class="col-md px-0"><img class="w-100" src="./images/portfolio/thumbnails/5.jpg" alt=""></div>
<div class="col-md px-0"><img class="w-100" src="./images/portfolio/thumbnails/6.jpg" alt=""></div>
</div>
<div class="row py-5" style="background-color: #343a40;">
<div class="col text-center py-5">
<h2 class="text-light">Free Download at Start Bootstrap!</h2>
<button class="btn mt-4 bg-light text-dark fw-bold" id="header-btn">DOWNLOAD NOW!</button>
</div>
</div>
</div>
<!-- ========================= Section 05 ========================= -->
<div class="container text-center py-5 my-5">
<h2>Let's Get In Touch!</h2>
<hr class="my-4" style="width: 5%; margin: auto; height: 3px; border: none; color: #f24516; background-color:#f24516;
opacity: 1;">
<p class="w-50 m-auto">Ready to start your next project with us? Give us a call or send us an email and we will get back to you as soon as possible!</p>
<div class="row w-50 m-auto mt-5">
<div class="col-md">
<img src="./images/phone.png" alt="">
<p>+1 (555) 123-4567</p>
</div>
<div class="col-md">
<img src="./images/email.png" alt="">
contact#yourwebsite.com
</div>
</div>
</div>
<!-- ========================= footer ========================= -->
<div class="container-fluid text-center py-5" style="background-color: #f8f9fa;">
<p class="mb-0">Copyright © 2021 - Dabananda Mitra</p>
</div>
<!-- ========================= JavaScript ========================= -->
<script src="https://cdn.jsdelivr.net/npm/bootstrap#5.0.1/dist/js/bootstrap.bundle.min.js" integrity="sha384-gtEjrD/SeCtmISkJkNUaaKMoLD0//ElJ19smozuHV6z3Iehds+3Ulb9Bn9Plx0x4" crossorigin="anonymous"></script>
</body>
</html>

You accidently used the scroll()-trigger instead of the scrollTop()-function
Correct it to
$(document).ready(function() {
$(body).scroll(function() {
if ($(body).scrollTop() > 20) {
$("#navigation").addClass("nav-color");
}
else {
$("#navigation").removeClass("nav-color");
}
});
});

how to open accordion if its inside filter by using anchor tag

I am stuck in some unusual situation. I want to redirect button to the specific page where there are multiple category filters of bike models and similar category models description is mentioned in another page with same kind of filter but the inside filter, there are multiple accordions according to models.
Whenever I am trying to redirect link to particular models and its accordion should open but it is redirecting to only first element. Here is code
I have tried with adding id after link but its not working because there is filter in between
// add attempt here
$(document).ready(function() {
$(".rm-box").hide();
});
$(document).ready(function(){
$(".button").click(function(){
var value = $(this).attr("data-filter");
if (value == "all")
{
$(".filters").hide('1000');
}
else
{
$(".filters").not("." + value).hide("1000");
$(".filters").filter("." + value).show("1000");
}
$("ul .button").click(function(){
$(this).addClass('active').siblings().removeClass('active');
})
})
})
$(document).ready(function() {
var hash = window.location.hash;
hash && $('ul.myfilter a[href="' + hash + '"]').panel-body('show');
});
/* add helpful css here */
ul.myfilter {
padding: 0;
position: relative;
width: 100%;
margin: 10px 10px 30px;
}
.myfilter>li {
list-style: none;
float: left;
padding: 10px 20px;
color: #ffffff;
margin-right: 15px;
font-family: 'Oswald';
font-weight: 700;
text-transform: uppercase;
cursor: pointer;
font-size: 24px;
}
.myfilter>li:hover, .active {
color: #ff6501!important;
font-size: 30px!important;
}
.filter-cont{
padding: 0 30px;
position: relative;
padding: 30px;
box-sizing: border-box;
background-color: #000000;
width: 100%;
margin: 0;
}
.iron-883{
height:400px;
width: 100%;
background-size: cover;
background-position: 50%;
}
.acco-title:hover {
text-decoration: none;
}
.acco-title {
font-family: 'Montserrat';
font-weight: 700;
color: #ff6501 !important;
font-size: 24px;
text-transform: uppercase;
}
.colorview{
position: relative;
background-color: #363636;
width: 40%;
height: 500px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<ul class="myfilter">
<li class="button active" data-filter="sportster">Sportster</li>
<li class="button" data-filter="street">Street</li>
<li class="button" data-filter="softail">Softail</li>
<li class="button" data-filter="touring">Touring</li>
<li class="button" data-filter="cvo">Cvo</li>
<div style="clear: both;"></div>
</ul>
<div class="box filters sportster">
<div class="row">
<div class="col-md-6 col-xs-12 common-for-all">
<div class="col-md-4 cmn-fit-img iron-883">
</div>
<div class="col-md-2 cmn-fit-txt wh-rhs">
<h4>IRON 883</h4>
<a class="orng-btn filt-bike-link" href="hdmodels.html#collapse1">Know More</a>
</div>
</div>
<div class="col-md-6 col-xs-12 common-for-all">
<div class="col-md-4 cmn-fit-img forty-8">
</div>
<div class="col-md-2 cmn-fit-txt orng-rhs">
<h4>FORTY EIGHT</h4>
<a class="white-btn filt-bike-link" href="hdmodels.html#collapse2">Know More</a>
</div>
</div>
</div>
<div class="row hd-sportster">
<div class="col-md-6 col-xs-12 common-for-all">
<div class="col-md-4 cmn-fit-img custom-1200">
</div>
<div class="col-md-2 cmn-fit-txt orng-rhs">
<h4>1200 CUSTOM</h4>
<a class="white-btn filt-bike-link" href="hdmodels.html#collapse3">Know More</a>
</div>
</div>
<div class="col-md-6 col-xs-12 common-for-all">
<div class="col-md-4 cmn-fit-img hd-roadster">
</div>
<div class="col-md-2 cmn-fit-txt wh-rhs">
<h4>ROADSTER</h4>
<a class="orng-btn filt-bike-link" href="hdmodels.html">Know More</a>
</div>
</div>
</div>
</div>
<ul class="myfilter">
<li class="button active" data-filter="street">Street</li>
<li class="button" data-filter="sportster">Sportster</li>
<li class="button" data-filter="softail">Softail</li>
<li class="button" data-filter="touring">Touring</li>
<li class="button" data-filter="cvo">Cvo</li>
<div style="clear: both;"></div>
</ul>
<div class="box filters street">
<div class="panel-group" id="streetaccordion">
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<a data-toggle="collapse" data-parent="#streetaccordion" href="#collapse1" class="acco-title">Harley-Davidson Street-750</a>
</h4>
</div>
<div id="collapse1" class="panel-collapse collapse in">
<div class="panel-body">
Some Code
</div>
</div>
</div>
</div>
</div>

I am not going to try to figure out ALL your functionality but just address the question. Note where the element with id collapse2 is open when this is ran.
I used this reference: https://getbootstrap.com/docs/4.0/components/collapse/
I altered some CSS etc. just to show it better in this limited context more clearly. You were close but the key is the selector and then trigger the show event. These are the key lines: (comments in the code, note where they are placed)
let hash = window.location.hash;
$('#' + hash).collapse('show');
Side note, I moved these outside the UL since a UL can only contain li or a nested list item and added a class instead of in-line style:
<div class="clear-things"></div>
Reference https://www.w3.org/TR/html401/struct/lists.html#h-10.2
$(function() {
//$(".rm-box").hide();
$("ul.myfilter").find(".button").on('color-siblings', function(event) {
$(this).addClass('active').siblings().removeClass('active');
}).on('click', function(event) {
let filters = $(".filters");
let value = $(this).data("filter");
if (value == "all") {
filters.hide('1000');
} else {
filters.not("." + value).hide("1000");
filters.filter("." + value).show("1000");
}
$(this).trigger('color-siblings');
});
// code that toggles the collapse in the document ready event handler
// could also be a custom event trigger like I show for the color above
let hash = window.location.hash;
hash = "collapse2"; // just to test - get hash as above
// assumption of ID here thus the '#', ID MUST be unique so that is OK
$('#' + hash).collapse('show');
});
/* add helpful css here */
div>ul.myfilter {
background-color: #333333;
border: solid 1px lime;
}
/*so we see it */
ul.myfilter {
padding: 0;
position: relative;
width: 100%;
margin-top: 10px;
margin-right: 10px;
margin-bottom: 30px;
}
.myfilter>li {
list-style: none;
float: left;
padding-top: 1em;
padding-right: 1.2em;
color: #0165ff;
margin-right: 0.25em;
font-family: 'Oswald';
font-weight: 700;
text-transform: uppercase;
cursor: pointer;
font-size: 1.2em;
}
.myfilter>li:hover,
.active {
color: #ff6501!important;
}
.filter-cont {
padding: 0 30px;
position: relative;
padding: 30px;
box-sizing: border-box;
background-color: #000000;
width: 100%;
margin: 0;
}
.iron-883 {
height: 10px;
width: 100%;
background-size: cover;
background-position: 50%;
}
.acco-title:hover {
text-decoration: none;
}
.acco-title {
font-family: 'Montserrat';
font-weight: 700;
color: #ff6501 !important;
font-size: 24px;
text-transform: uppercase;
}
.colorview {
position: relative;
background-color: #363636;
width: 40%;
height: 500px;
}
.clear-things {
clear: both;
}
.panel-body {border:solid blue 1px;}
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
<div class="accordion" id="accordionExample">
<ul class="myfilter">
<li class="button active" data-filter="sportster">Sportster</li>
<li class="button" data-filter="street">Street</li>
<li class="button" data-filter="softail">Softail</li>
<li class="button" data-filter="touring">Touring</li>
<li class="button" data-filter="cvo">Cvo</li>
</ul>
<div class="clear-things"></div>
<div class="box filters sportster">
<div class="row">
<div class="col-md-6 col-xs-12 common-for-all">
<div class="col-md-4 cmn-fit-img iron-883">
</div>
<div class="col-md-2 cmn-fit-txt wh-rhs">
<h4>IRON 883</h4>
<a class="orng-btn filt-bike-link" href="#collapse1">Know More</a>
</div>
</div>
<div class="col-md-6 col-xs-12 common-for-all">
<div class="col-md-4 cmn-fit-img forty-8">
</div>
<div class="col-md-2 cmn-fit-txt orng-rhs">
<h4>FORTY EIGHT</h4>
<a class="white-btn filt-bike-link" href="#collapse2">Know More</a>
</div>
</div>
</div>
<div class="row hd-sportster">
<div class="col-md-6 col-xs-12 common-for-all">
<div class="col-md-4 cmn-fit-img custom-1200">
</div>
<div class="col-md-2 cmn-fit-txt orng-rhs">
<h4>1200 CUSTOM</h4>
<a class="white-btn filt-bike-link" href="hdmodels.html#collapse3">Know More</a>
</div>
</div>
<div class="col-md-6 col-xs-12 common-for-all">
<div class="col-md-4 cmn-fit-img hd-roadster">
</div>
<div class="col-md-2 cmn-fit-txt wh-rhs">
<h4>ROADSTER</h4>
<a class="orng-btn filt-bike-link" href="#collapse3">Know More</a>
</div>
</div>
</div>
</div>
<ul class="myfilter">
<li class="button active" data-filter="street">Street</li>
<li class="button" data-filter="sportster">Sportster</li>
<li class="button" data-filter="softail">Softail</li>
<li class="button" data-filter="touring">Touring</li>
<li class="button" data-filter="cvo">Cvo</li>
</ul>
<div class="clear-things"></div>
<div class="box filters street">
<div class="panel-group" id="streetaccordion">
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<a data-toggle="collapse" data-parent="#streetaccordion" href="#collapse1" class="acco-title">Harley-Davidson Street-750</a>
</h4>
</div>
<div id="collapse1" class="panel-collapse collapse in">
<div class="panel-body">
Some Code 750 CC
</div>
</div>
</div>
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<a data-toggle="collapse" data-parent="#streetaccordion" href="#collapse2" class="acco-title">Harley-Davidson Forty Eight</a>
</h4>
</div>
<div id="collapse2" class="panel-collapse collapse in">
<div class="panel-body">
Some Code Forty Eight Cheese bits
</div>
</div>
</div>
</div>
</div>
</div>

How to create a polling system in HTML for a movie review website?

How do I creating a voting system that uses checkboxes for 1 star, 2 stars, 3 stars, 4 stars and 5 stars. According to what the user picks it will generate an average user rating from the given votes and display the number of stars required.
I am not sure where exactly to start in terms of gathering the input from the user etc...This is all the code I have for now
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- Font Awesome Icon Library -->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<style>
* {
box-sizing: border-box;
}
body {
font-family: Arial;
margin: 0 auto; /* Center website */
max-width: 800px; /* Max width */
padding: 20px;
}
.heading {
font-size: 25px;
margin-right: 25px;
}
.fa {
font-size: 25px;
}
.checked {
color: orange;
}
/* Three column layout */
.side {
float: left;
width: 15%;
margin-top:10px;
}
.middle {
margin-top:10px;
float: left;
width: 70%;
}
/* Place text to the right */
.right {
text-align: right;
}
/* Clear floats after the columns */
.row:after {
content: "";
display: table;
clear: both;
}
/* The bar container */
.bar-container {
width: 100%;
background-color: #f1f1f1;
text-align: center;
color: white;
}
/* Individual bars */
.bar-5 {width: 60%; height: 18px; background-color: #4CAF50;}
.bar-4 {width: 30%; height: 18px; background-color: #2196F3;}
.bar-3 {width: 10%; height: 18px; background-color: #00bcd4;}
.bar-2 {width: 4%; height: 18px; background-color: #ff9800;}
.bar-1 {width: 15%; height: 18px; background-color: #f44336;}
/* Responsive layout - make the columns stack on top of each other instead of next to each other */
#media (max-width: 400px) {
.side, .middle {
width: 100%;
}
.right {
display: none;
}
}
</style>
</head>
<body>
<span class="heading">User Rating</span>
<span class="fa fa-star checked"></span>
<span class="fa fa-star checked"></span>
<span class="fa fa-star checked"></span>
<span class="fa fa-star checked"></span>
<span class="fa fa-star"></span>
<p>4.1 average based on 254 reviews.</p>
<hr style="border:3px solid #f1f1f1">
<div class="row">
<div class="side">
<div>5 star</div>
</div>
<div class="middle">
<div class="bar-container">
<div class="bar-5"></div>
</div>
</div>
<div class="side right">
<div>150</div>
</div>
<div class="side">
<div>4 star</div>
</div>
<div class="middle">
<div class="bar-container">
<div class="bar-4"></div>
</div>
</div>
<div class="side right">
<div>63</div>
</div>
<div class="side">
<div>3 star</div>
</div>
<div class="middle">
<div class="bar-container">
<div class="bar-3"></div>
</div>
</div>
<div class="side right">
<div>15</div>
</div>
<div class="side">
<div>2 star</div>
</div>
<div class="middle">
<div class="bar-container">
<div class="bar-2"></div>
</div>
</div>
<div class="side right">
<div>6</div>
</div>
<div class="side">
<div>1 star</div>
</div>
<div class="middle">
<div class="bar-container">
<div class="bar-1"></div>
</div>
</div>
<div class="side right">
<div>20</div>
</div>
</div>
</body>
</html>

Usually a 5-star polling system will require a database and a backend programming language. i.e. Mysql and PHP.
Here is an example:
https://www.script-tutorials.com/how-to-create-own-voting-system/

My JS is not working with my html/css. Not sure why. (Console error 'ReferenceError: $ is not defined')

I am trying to create a content slider, and am having difficulties with it functioning appropriately. Specifically when testing locally the aspect that is not working is: (When you click the arrows left or right the current-slide fades out and fades back in but the slide content does not switch to the next block of content.)
Here is my HTML:
<!DOCTYPE html>
<html>
<head>
<html lang="en-US">
<meta charset="UTF-8">
<title>PLACEHOLDER</title>
<meta name"keywords" content="PLACEHOLDER" />
<meta name"description" content="PLACEHOLDER" />
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script>
<script src="code.js"></script>
<link type="text/css" rel="stylesheet" href="style2.css" />
</head>
<body>
<div class="slider">
<div class="slide active-slide">
<div class="container">
<div class="row">
<div class="slide-copy col-xs-5">
<h1 id="welcome">FIRST SLIDE HEADER</h1>
<div id="img1">
<img src="######.png" width="450" height="250" />
</div>
<div id="intro">
<p>FIRST SLIDE CONTENT</p </div>
</div>
</div>
</div>
<div class="slide slide-feature">
<div class="container">
<div class="row">
<div class="col-xs-12">
<h1>Slide2</h1>
<p>Slide 2 stuff.</p>
</div>
</div>
</div>
</div>
<div class="slide">
<div class="container">
<div class="row">
<div class="slide-copy col-xs-5">
<h1>Slide 3</h1>
<h2>Slide3</h2>
<p>Slide3 content</p>
</div>
</div>
</div>
</div>
<div class="slide">
<div class="container">
<div class="row">
<div class="slide-copy col-xs-5">
<h1>Slide 4</h1>
<p>slide 4 content</p>
</div>
</div>
</div>
</div>
</div>
<div class="slider-nav">
<a href="#" class="arrow-prev">
<img src="ARROW LEFT IMAGE">
</a>
<ul class="slider-dots">
<li class="dot active-dot">•</li>
<li class="dot">•</li>
<li class="dot">•</li>
<li class="dot">•</li>
</ul>
<a href="#" class="arrow-next">
<img src="ARROW RIGHT IMAGE">
</a>
</div>
Here is my JS:
var main = function () {
$('.arrow-next').click(function () {
var currentSlide = $('.active-slide');
var nextSlide = currentSlide.next();
var currentDot = $('.active-dot');
var nextDot = currentDot.next()
if (nextSlide.length === 0) {
nextSlide = $('.slide').first();
nextDot = $('.dot').first();
}
currentSlide.fadeOut(600).removeClass('active-slide');
nextSlide.fadeIn(600).addClass('active-slide');
currentDot.removeClass('active-dot');
nextDot.addClass('active-dot');
});
$('.arrow-prev').click(function()
{
var currentSlide = $('.active-slide');
var prevSlide = currentSlide.prev();
var currentDot = $('.active-dot');
var prevDot = currentDot.prev()
if(prevSlide.length == 0)
{
prevSlide = $('.slide').last();
prevDot = $('.dot').last();
}
currentSlide.fadeOut(600).removeClass('active-slide');
prevSlide.fadeIn(600).addClass('active-slide');
currentDot.removeClass('active-dot');
prevDot.addClass('active-dot');
});
};
$(document).ready(main);
HERE IS MY CSS(Just to tie it all together):
.slider {
position: relative;
width: 50%;
height: 470px;
margin-left: 25%;
border-bottom: 1px solid #ddd;
margin-top: -8%;
}
.slide {
background: transparent url('http://s3.amazonaws.com/codecademy-content/courses/ltp2/img/flipboard/feature-gradient-transparent.png') center center no-repeat;
background-size: cover;
display: none;
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
}
.active-slide {
display: block;
}
.slide-copy h1 {
color: #363636;
font-family: 'Oswald', sans-serif;
font-weight: 400;
font-size: 40px;
margin-top: 105px;
margin-bottom: 0px;
}
.slide-copy h2 {
color: #b7b7b7;
font-family: 'Oswald', sans-serif;
font-weight: 400;
font-size: 40px;
margin: 5px;
}
.slide-copy p {
color: #959595;
font-family: Georgia, "Times New Roman", serif;
font-size: 1.15em;
line-height: 1.75em;
margin-bottom: 15px;
margin-top: 16px;
}
.slide-img {
text-align: right;
}
/* Slide feature */
.slide-feature {
text-align: center;
background-image: url('http://s3.amazonaws.com/codecademy-content/courses/ltp2/img/flipboard/ac.png');
height: 470px;
}
.slide-feature img {
margin-top: 112px;
margin-bottom: 28px;
}
.slide-feature a {
display: block;
color: #6fc5e0;
font-family: "HelveticaNeueMdCn", Helvetica, sans-serif;
font-family: 'Oswald', sans-serif;
font-weight: 400;
font-size: 20px;
}
.slider-nav {
text-align: center;
margin-top: 20px;
margin-top: 30%;
}
.arrow-prev {
margin-right: 45px;
display: inline-block;
vertical-align: top;
margin-top: 9px;
}
.arrow-next {
margin-left: 45px;
display: inline-block;
vertical-align: top;
margin-top: 9px;
}
.slider-dots {
list-style: none;
display: inline-block;
padding-left: 0;
margin-bottom: 0;
}
.slider-dots li {
color: #bbbcbc;
display: inline;
font-size: 30px;
margin-right: 5px;
}
.slider-dots li.active-dot {
color: #363636;
}
NOTE: I only put the sections of html/js/css that matter for this case. And I used placeholders for some text and images. On my local machine those placeholders are replaced with correct content.

if you look at the HTML closely, you'll see that the slider div's are not positioned properly. all the other div's with the class '.slide' are enclosed inside <div class="slide active-slide"> whereas they should be independent of each other.
the javascript code is not able to find the next() slide since they're all contained in one single parent which is the 'active-slide'
you need to update your HTML to the following
<div class="slider">
<div class="slide active-slide">
<div class="container">
<div class="row">
<div class="slide-copy col-xs-5">
<h1 id="welcome">FIRST SLIDE HEADER</h1>
<div id="img1">
<img src="######.png" width="450" height="250" />
</div>
<div id="intro">
<p>FIRST SLIDE CONTENT</p </div>
</div>
</div>
</div>
</div>
</div>
<div class="slide slide-feature">
<div class="container">
<div class="row">
<div class="col-xs-12">
<h1>Slide2</h1>
<p>Slide 2 stuff.</p>
</div>
</div>
</div>
</div>
<div class="slide">
<div class="container">
<div class="row">
<div class="slide-copy col-xs-5">
<h1>Slide 3</h1>
<h2>Slide3</h2>
<p>Slide3 content</p>
</div>
</div>
</div>
</div>
<div class="slide">
<div class="container">
<div class="row">
<div class="slide-copy col-xs-5">
<h1>Slide 4</h1>
<p>slide 4 content</p>
</div>
</div>
</div>
</div>
</div>
<div class="slider-nav">
<a href="#" class="arrow-prev">
<img src="ARROW LEFT IMAGE">
</a>
<ul class="slider-dots">
<li class="dot active-dot">•</li>
<li class="dot">•</li>
<li class="dot">•</li>
<li class="dot">•</li>
</ul>
<a href="#" class="arrow-next">
<img src="ARROW RIGHT IMAGE">
</a>
</div>
here's a working JSFIDDLE for the same. hope this helps

You just need to include the jQuery library from here: http://jquery.com/download/

You will get this error if you haven't included jquery file or you are getting conflicts in jquery.
ReferenceError: $ is not defined
Add following in Head section of your code:
<script src="//code.jquery.com/jquery-1.11.3.min.js"></script>