Joomla Javascript not responding - javascript

I recently started learning joomla and I have been trying out code for a sticky navbar when you scroll. In HTML my code works fine, but the moment I change it to php and import it to joomla it stops responding the way it does in HTML. Where exactly did I go wrong and how can I fix my code?
HTML
<!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://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
<!-- custom css -->
<link rel="stylesheet" href="style.css">
<title>Hello, world!</title>
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
</li>
</ul>
<form class="form-inline my-2 my-lg-0">
<input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form>
</div>
</nav>
<div class="content-area"></div>
<div class="footer">
<div class="conatiner">
<p>Footer area</p>
</div>
</div>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js#1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>
<script type="text/javascript">
$(window).on('scroll', function() {
if ($(window).scrollTop()) {
$('nav').addClass('fixed');
} else {
$('nav').removeClass('fixed');
}
})
</script>
</body>
</html>
Php
<?php defined( '_JEXEC' ) or die( 'Restricted access' ); ?>
<!doctype HTML public "-//W3C//DTD HTML 5.0 Transitional//EN" >
<html xmlns="http://www.w3.org/1999/xhtml"
xml:lang="<?php echo $this->language; ?>" lang="<?php echo $this->language; ?>" >
<head>
<jdoc:include type="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://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
<!-- custom css -->
<link rel="stylesheet" href="<?php echo $this->baseurl ?>/templates/<?php echo $this->template ?>/style.css">
<title>Hello, world!</title>
</head>
<?php
$app = JFactory::getApplication();
$menu = $app->getMenu();
$active = $menu->getActive();
$class = $active->alias;
?>
<body class="is-preloaded" id="<?php echo $class; ?>">
<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
</li>
</ul>
<form class="form-inline my-2 my-lg-0">
<input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form>
</div>
</nav>
<div class="content-area"></div>
<div class="footer">
<div class="conatiner">
<p>Footer area</p>
</div>
</div>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js#1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>
<script type="text/javascript">
$(window).on('scroll', function(){
if($(window).scrollTop()){
$('nav').addClass('fixed');
}
else {
$('nav').removeClass('fixed');
}
})
</script>
</body>
</html>
The template is read and opens but then the navbar doesn't stick to the top anymore when I scroll. How can I fix that?

Related

HTML Wow.js not working (Wrong initializtion or wrong script calls?)

I've been trying to implement wow.js into my HTML code but I'm having trouble making it work. Am I missing script loads or loading the wrong scripts? What might I be doing wrong? Maybe I couldn't initiate wow.js the right way? The code is given below, I could've excluded the nav part out since it will not use animations, but I didn't want to cut any code out. The animation is called in the bottom div part.
Thanks for any help in advance.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta hhtp-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Okan Sen</title>
<link rel="shortcut icon" type="image/jpg" href="OKANSENLogoWineRed.jpg">
<!-- ANIMATE CSS LINK (REQUIRED) -->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/animate.css/4.1.1/animate.min.css">
<link rel="stylesheet" href="css/bootstrap.min.css">
<link rel="stylesheet" type="text/css" href="global.css">
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.3.0/animate.css"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<script src="https://unpkg.com/#popperjs/core#2.4.0/dist/umd/popper.min.js"></script>
<script src="js/bootstrap.min.js"></script>
<!-- WOW ANIMATION LIB LINK -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/wow/1.1.2/wow.min.js"></script>
<script>
// WOW INIT
new WOW().init();
</script>
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-light bg-transparent">
<div class="container-fluid">
<a class="navbar-brand" href="#">OKAN</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav me-auto mb-2 mb-lg-0">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-bs-toggle="dropdown" aria-expanded="false">
Dropdown
</a>
<ul class="dropdown-menu" aria-labelledby="navbarDropdown">
<li><a class="dropdown-item" href="#">Action</a></li>
<li><a class="dropdown-item" href="#">Another action</a></li>
<li><hr class="dropdown-divider"></li>
<li><a class="dropdown-item" href="#">Something else here</a></li>
</ul>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
</li>
</ul>
<form class="d-flex">
<input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success" type="submit">Search</button>
</form>
</div>
</div>
</nav>
<div class="container-fluid bg animated wow zoomIn">
</div>
<section class="sec1 animated wow zoomIn">
<h1>LELELELELEL</h1>
</section>
</body>
</html>

I have created vary basic working example
<head>
<link rel="stylesheet" type="text/css"
href="https://netdna.bootstrapcdn.com/font-awesome/4.0.3/css/font-awesome.min.css">
<link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/animatecss/3.5.2/animate.min.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/wow/1.1.2/wow.min.js"></script>
<script>
new WOW().init();
</script>
</head>
<body>
<div class="wow bounce">
Content to Reveal Here
</div>
</body>
Edit: Your Example
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta hhtp-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Okan Sen</title>
<link rel="shortcut icon" type="image/jpg" href="OKANSENLogoWineRed.jpg">
<!-- ANIMATE CSS LINK (REQUIRED) -->
<link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/animatecss/3.5.2/animate.min.css">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css"
integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
<link rel="stylesheet" type="text/css" href="global.css">
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<script src="https://unpkg.com/#popperjs/core#2.4.0/dist/umd/popper.min.js"></script>
<script src="js/bootstrap.min.js"></script>
<!-- WOW ANIMATION LIB LINK -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/wow/1.1.2/wow.min.js"></script>
<script>
// WOW INIT
new WOW().init();
</script>
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-light bg-transparent">
<div class="container-fluid">
<a class="navbar-brand" href="#">OKAN</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarSupportedContent"
aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav me-auto mb-2 mb-lg-0">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-bs-toggle="dropdown"
aria-expanded="false">
Dropdown
</a>
<ul class="dropdown-menu" aria-labelledby="navbarDropdown">
<li><a class="dropdown-item" href="#">Action</a></li>
<li><a class="dropdown-item" href="#">Another action</a></li>
<li>
<hr class="dropdown-divider">
</li>
<li><a class="dropdown-item" href="#">Something else here</a></li>
</ul>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
</li>
</ul>
<form class="d-flex">
<input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success" type="submit">Search</button>
</form>
</div>
</div>
</nav>
<div class="container-fluid bg animated wow zoomIn">
</div>
<section class="sec1 animated wow zoomIn">
<h1>LELELELELEL</h1>
</section>
</body>
</html>
Edit 2: Some Explanation
When I looked at the version of animate.css 4.1.1, as per link it's not compatible. and this
So I used a bit older version.
Some recommended AOS for animation
And for your last question, you can use your own styles as long as we
are not overriding some original styles from animation

How to solve problem with boostrap navigation bar?

Here is my 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">
<title>Document</title>
<link rel="stylesheet" href="assets/css/styles.css" />
<!-- <link rel="stylesheet" href="assets/css/plugins.min.css" /> -->
<link rel="stylesheet" href="assets/css/theme-preview.css" />
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css"/>
</head>
<body>
<header>
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#">Disabled</a>
</li>
</ul>
<form class="form-inline my-2 my-lg-0">
<input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form>
</div>
</nav>
</header>
<script src='https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js'></script>
</body>
</html>
At this stage I just copied the bootstrap code, but neither dropdown-menu doesn't work nor nav-expand. However I added the script and stylesheet. Maybe I should download bootstrap in seperate folder? Or I forgor to add some links?

you forgor to add jQuery link
you need to add jQuery library to run bootstrap
<!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">
<title>Document</title>
<link rel="stylesheet" href="assets/css/styles.css" />
<!-- <link rel="stylesheet" href="assets/css/plugins.min.css" /> -->
<link rel="stylesheet" href="assets/css/theme-preview.css" />
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
</head>
<body>
<header>
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent"
aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button"
data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#">Disabled</a>
</li>
</ul>
<form class="form-inline my-2 my-lg-0">
<input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form>
</div>
</nav>
</header>
<script src='https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js'></script>
</body>
</html>

Drop down my boostrap navbar in mobile view is always collapsed by default..how can i fix this?

Here is my code for navbar. It's working perfectly in desktop view but when it comes to mobile view the drop down is not functioning properly. What I might be doing wrong?
<nav class="fixed-top navbar navbar-expand-lg navbar-dark ftco_navbar bg-dark ftco-navbar-light" id="ftco-navbar">
<div class="container">
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#ftco-nav" aria-controls="ftco-nav" aria-expanded="false" aria-label="Toggle navigation">
<span class="fa fa-bars"></span> Menu
</button>
<form action="#" class="searchform order-lg-last">
</form>
<div class="collapse navbar-collapse" id="ftco-nav">
<ul class="navbar-nav mr-auto mt-2">
<a class="navbar-brand" href="<?php echo base_url() ?>home"><img src="<?php echo base_url() ?>assets/images/logo.png"></a>
</ul>
<ul class="navbar-nav ml-auto">
<li class="nav-item ">Home</li>
<li class="nav-item">About</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Our Services
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#">Construction and Planning</a>
<a class="dropdown-item" href="#">Architecting</a>
<a class="dropdown-item" href="#">General Services</a>
<a class="dropdown-item" href="#">Interior Design</a>
</div>
</li>
<li class="nav-item">Contact</li>
</ul>
</div>
</div>
</nav>

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<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"
/>
<title>Document</title>
</head>
<body>
<nav
class="fixed-top navbar navbar-expand-lg navbar-dark ftco_navbar bg-dark ftco-navbar-light"
id="ftco-navbar"
>
<div class="container">
<button
class="navbar-toggler"
type="button"
data-toggle="collapse"
data-target="#ftco-nav"
aria-controls="ftco-nav"
aria-expanded="false"
aria-label="Toggle navigation"
>
<span class="fa fa-bars"></span> Menu
</button>
<form action="#" class="searchform order-lg-last"></form>
<div class="collapse navbar-collapse" id="ftco-nav">
<ul class="navbar-nav mr-auto mt-2">
<a class="navbar-brand" href="<?php echo base_url() ?>home"
><img src="<?php echo base_url() ?>assets/images/logo.png"
/></a>
</ul>
<ul class="navbar-nav ml-auto">
<li class="nav-item">
Home
</li>
<li class="nav-item">
About
</li>
<li class="nav-item dropdown">
<a
class="nav-link dropdown-toggle"
href="#"
id="navbarDropdown"
role="button"
data-toggle="dropdown"
aria-haspopup="true"
aria-expanded="false"
>
Our Services
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#">Construction and Planning</a>
<a class="dropdown-item" href="#">Architecting</a>
<a class="dropdown-item" href="#">General Services</a>
<a class="dropdown-item" href="#">Interior Design</a>
</div>
</li>
<li class="nav-item">
<a href="<?php echo base_url() ?>contact" class="nav-link"
>Contact</a
>
</li>
</ul>
</div>
</div>
</nav>
<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/1.11.0/umd/popper.min.js"
integrity="sha384-b/U6ypiBEHpOf/4+1nzFpr53nxSS+GLCkfwBdFNTxtclqqenISfwAzpKaMNFNmj4"
crossorigin="anonymous"
></script>
<!-- Always remember to call the above files first before calling the
bootstrap.min.js file -->
<script
src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/js/bootstrap.min.js"
integrity="sha384-h0AbiXch4ZDo7tp9hKZ4TsHbi047NrKGLO3SEJAg45jXxnGIfYzk4Si90RDIqNm1"
crossorigin="anonymous"
></script>
</body>
</html>
Can you try adding these scripts. It seems to be working. Please let me know if this is working for you.

Bootstrap navbar dropdown link does not work when bootstrap.min.js is in the code

I am new to this so please bear with me. I copied this navbar code from Bootstrap and tweaked it to fit my code.
I have a dropdown list with three dropdown items. I want the user to have two options. They can go to the portfolio page and find the links there or they can use the dropdown menu.
The link to the portfolio page does not work when the last script that contains bootstrap.min.js is in the code. Not sure why this is not working. If I take out the dropdown and make it a regular link it goes to the portfolio page. Here is my code:
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<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">
<link rel ="stylesheet" type="text/css" href="style.css">
<title>Do You Know Jennipher</title>
</head>
<nav class="navbar sticky-top navbar-expand-lg">
<a class="navbar-brand" href="index.html">Do You Know Jennipher</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="index.html">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="aboutme.html">About Me</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" href="previous_work.html">Portfolio</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="previous_work.html">Egyptian Petrdise</a>
<a class="dropdown-item" href="previous_work.html">Movie Madness</a>
<a class="dropdown-item" href="previous_work.html">George's Safari Adventure</a>
</div>
</li>
<li class="nav-item">
<a class="nav-link" href="gallery.html">Gallery</a>
</li>
<li class="nav-item">
<a class="nav-link" href="say_hello.html">Say Hello</a>
</li>
</ul>
</div>
</nav>
<header>
<div class="flex-container">
<img src="images/banner_ad.jpg" class="banner" alt="banner ad">
</div>
</header>
<body>
<section class="intro">
<div class="container">
<div class="row">
<div class="col-6">
<img src="images/mountains.jpg" alt="rocky mountains" class="mountain" width="500px">
</div>
<div class="col-6">
<p class="intro-text">Hello, my name is Jennipher </p>
</div>
</div>
</div>
</section>
<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>
</body>
<footer>
<p class="footer">© Copyright 2019 Jennipher Samms</p>
</footer>
</html>

There's nothing wrong with min.js library. Only you should follow perfect body layout and syntax. It's better to always keep your <script> files before </body> tag ends. End you forgot write some elements inside the body instead you wrote them outside body tag. I just adjusted some of your code. Check it once.
<html lang="en">
<head>
<meta charset="utf-8">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
<link rel ="stylesheet" type="text/css" href="style.css">
<title>Do You Know Jennipher</title>
</head>
<body>
<nav class="navbar sticky-top navbar-expand-lg">
<a class="navbar-brand" href="index.html">Do You Know Jennipher</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="index.html">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="aboutme.html">About Me</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" href="previous_work.html">Portfolio</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="previous_work.html">Egyptian Petrdise</a>
<a class="dropdown-item" href="previous_work.html">Movie Madness</a>
<a class="dropdown-item" href="previous_work.html">George's Safari Adventure</a>
</div>
</li>
<li class="nav-item">
<a class="nav-link" href="gallery.html">Gallery</a>
</li>
<li class="nav-item">
<a class="nav-link" href="say_hello.html">Say Hello</a>
</li>
</ul>
</div>
</nav>
<header>
<div class="flex-container">
<img src="images/banner_ad.jpg" class="banner" alt="banner ad">
</div>
</header>
<section class="intro">
<div class="container">
<div class="row">
<div class="col-md-6">
<img src="images/mountains.jpg" alt="rocky mountains" class="mountain" width="500px">
</div>
<div class="col-md-6">
<p class="intro-text">Hello, my name is Jennipher </p>
</div>
</div>
</div>
</section>
<footer>
<p class="footer text-center">© Copyright 2019 Jennipher Samms</p>
</footer>
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>
</body>
</html>
For better practice please go through this link

Bootstrap 4 navbar toggle button not working correctly

I have html code working with bootstrap 4. In my case when navbar toggle button clicked the navbar open and hidden automatically. How to manually open and hidden navbar when clicked? Thanks anyone.
<title>SuperEvent</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" type="text/css" href="css/style.css">
<link rel="stylesheet" type="text/css" href="css/bootstrap.css">
<link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.5.2/animate.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<script type="text/javascript" src="js/script.js"></script>
<div class="header">
<div class="container">
<div class="row">
<div class="col-md-12 col-sm-12 col-xs-12">
<img src="img/iklan.JPG" class="iklan float-right">
</div>
</div>
<div class="cleafix"></div>
<nav class="navbar navbar-expand-lg " id="nav" >
<a class="navbar-brand" href="#">Super Event</a>
<button class="navbar-toggler custom-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">About</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Services</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Portfolio</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Contact Us</a>
</li>
</ul>
</div>
</nav>

This can help:
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script>
</head>
<body>
<nav class="navbar navbar-expand-md bg-dark navbar-dark">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#collapsibleNavbar">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="collapsibleNavbar">
<ul class="navbar-nav">
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
</ul>
</div>
</nav>
<br>
<div class="container">
<h3>Collapsible Navbar</h3>
<p>In this example, the navigation bar is hidden on small screens and replaced by a button in the top right corner (try to re-size this window).</p>
<p>Only when the button is clicked, the navigation bar will be displayed.</p>
<p>Tip: You can also remove the .navbar-expand-md class to ALWAYS hide navbar links and display the toggler button.</p>
</div>
</body>
</html>
For more details follow by link - https://www.w3schools.com/bootstrap4/bootstrap_navbar.asp

If you want to use Bootstrap 5, include just this in your HTML file:
<script src="js/bootstrap.js"></script>
Implementation example:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Navbar</title>
<link rel="stylesheet" href="css/bootstrap.min.css">
<link rel="stylesheet" href="css/styles.css">
</head>
<body>
<nav class="navbar navbar-expand-sm navbar-dark">
<div class="container-fluid">
<!--LOGO IMAGE-->
<a class="navbar-brand" href="#">
<img src="images/img_avatar1.png" alt="Avatar Logo" style="width:50px;" class=" rounded-pill">
</a>
<a class="navbar-brand" href="#"><span style="font-size: 30px;">Alex Luca</span></a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#collapsibleNavbar" aria-expanded="false" aria-controls="collapsibleNavbar">
<span class="navbar-toggler-icon"></span>
</button>
<!--Using justify-content-end, you can align the links at the right-->
<div class="collapse navbar-collapse justify-content-end text-center" id="collapsibleNavbar">
<ul class="navbar-nav">
<li class="nav-item px-3">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item px-3">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item px-3">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item dropdown px-3">
<a class="nav-link dropdown-toggle" href="#" role="button" data-bs-toggle="dropdown">Dropdown</a>
<ul class="dropdown-menu">
<li><a class="dropdown-item" href="#">Link</a></li>
<li><a class="dropdown-item" href="#">Another link</a></li>
<li><a class="dropdown-item" href="#">A third link</a></li>
</ul>
</li>
</ul>
</div>
</div>
</nav>
<div class="container-fluid mt-3">
<h3>Navbar With Dropdown</h3>
<p>This example adds a dropdown menu in the navbar.</p>
</div>
<!--For the dropdown menu and collapsed meniu-->
<script src="js/bootstrap.js"></script>
<script src="js/script.js"></script>
</body>
</html>

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