Bootstrap4 Collapse Menu pushing content - javascript

I did look the other forums and but id didn't solve my problems. What's happening is , at a sm breakpoint in bootstrap the hamburger menu , when clicked , is pushing all the header content ( button + h1 ) to the middle and it's ruining the design of the page , how can i fix this problem?
here's my html code :
<nav class="navbar navbar-expand-md navbar-dark">
<a class="navbar-brand m-0" href="#">
<img src="images/Untitled-2.png" style="width:235px">
</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 mx-auto">
<li class="nav-item active">
<a class="nav-link" href="#">HOME<span class="sronly">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">ABOUT</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#"
id="navbarDropdown" role="button"
datatoggle="dropdown"
aria-haspopup="true"
aria-expanded="false">
WORK</a>
<div class="dropdown-menu"
arialabelledby="navbarDropdown">
<a class="dropdown-item" href="#">GALLERY</a>
<a class="dropdown-item" href="#">VIDEO</a>
</div>
</li>
<li class="nav-item">
<a class="nav-link" href="#">CONTACT</a>
</li>
</ul>

Related

Bootstrap 5: Navbar to the most right [duplicate]

How do I align a navbar item to right?
I want to have the login and register to the right.
But everything I try does not seem to work.
This is what I have tried so far:
<div> around the <ul> with the atribute: style="float: right"
<div> around the <ul> with the atribute: style="text-align: right"
tried those two things on the <li> tags
tried all those things again with !important added to the end
changed nav-item to nav-right in the <li>
added a pull-sm-right class to the <li>
added a align-content-end class to the <li>
This is my code:
<div id="app" class="container">
<nav class="navbar navbar-toggleable-md navbar-light bg-faded">
<button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<a class="navbar-brand" href="#">Navbar</a>
<ul class="navbar-nav">
<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="#">Features</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricingg</a>
</li>
</ul>
<ul class="navbar-nav " >
<li class="nav-item">
<a class="nav-link" href="{{ url('/login') }}">Login</a>
</li>
<li class="nav-item">
<a class="nav-link" href="{{ url('/register') }}">Register</a>
</li>
</ul>
</nav>
#yield('content')
</div>
Bootstrap 5 (update 2021)
In Bootstrap 5 (see this question), ml-auto has been replaced with ms-auto to represent start instead of left. Since the Navbar is still based on flexbox, auto margins OR flexbox utility classes are still used to align Navbar content.
For example, use me-auto...
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container-fluid">
<a class="navbar-brand" href="#">Brand</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarContent">
<ul class="navbar-nav me-auto mb-2 mb-lg-0">
<li class="nav-item">
<a class="nav-link active" href="#">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
</ul>
<ul class="navbar-nav">
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-bs-toggle="dropdown" aria-expanded="false"> Menu </a>
<ul class="dropdown-menu dropdown-menu-end" aria-labelledby="navbarDropdown">
<li><a class="dropdown-item" href="#">Action</a></li>
<li><a class="dropdown-item" href="#">Another action</a></li>
</ul>
</li>
</ul>
</div>
</div>
</nav>
Bootstrap 5 right align Navbar content
Bootstrap 4 (original answer)
Bootstrap has many different ways to align navbar items. float-right won't work because the navbar is now flexbox.
You can use mr-auto for auto right margin on the 1st (left) navbar-nav.
Alternatively, ml-auto could be used on the 2nd (right) navbar-nav , or if you just have a single navbar-nav.
<nav class="navbar navbar-expand-md navbar-light bg-light">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNav">
<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="#">Features</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricing</a>
</li>
</ul>
<ul class="navbar-nav">
<li class="nav-item">
<a class="nav-link" href="#">Login</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Register</a>
</li>
</ul>
</div>
</nav>
https://codeply.com/go/P0G393rzfm
There are also flexbox utils. For example use justify-content-end on the collapse menu:
<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
<div class="container-fluid">
<a class="navbar-brand" href="#">Brand</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse justify-content-end" id="navbarNav">
<ul class="navbar-nav">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Contact</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricing</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Download</a>
</li>
</ul>
</div>
</div>
</nav>
Or when you have 2 navbar-navs, use justify-content-between in navbar-collapse would work to even the space between the navbar-navs:
<div class="navbar-collapse collapse justify-content-between">
<ul class="navbar-nav mr-auto">
..
</ul>
<ul class="navbar-nav">
..
</ul>
</div>
Update for Bootstrap 4.0 and newer
As of Bootstrap 4 beta, ml-auto will still work to push items to the right. Just be aware the the navbar-toggleable- classes have changed to navbar-expand-*
Updated navbar right for Bootstrap 4
Another frequent Bootstrap 4 Navbar right alignment scenario includes a button on the right that remains outside the mobile collapse nav so that it is always shown at all widths.
Right align button that is always visible
Related: Bootstrap NavBar with left, center or right aligned items
In my case, I wanted just one set of navigation buttons / options and found that this will work:
<div class="collapse navbar-collapse justify-content-end" id="navbarCollapse">
<ul class="navbar-nav">
<li class="nav-item">
<a class="nav-link" href="#">Sign Out</a>
</li>
</ul>
</div>
So, you will add justify-content-end to the div and omit mr-auto on the list.
Here is a working example.
For those who is still struggling with this issue in BS4 simply try below code -
<ul class="navbar-nav ml-auto">
On Bootstrap 4
If you want to align brand to your left and all the navbar-items to right, change the default mr-auto to ml-auto
<ul class="navbar-nav ml-auto">
On Bootsrap 4.0.0-beta.2, none of the answers listed here worked for me. Finally, the Bootstrap site gave me the solution, not via its doc but via its page source code...
Getbootstrap.com align their right navbar-nav to the right with the help of the following class: ml-md-auto.
Use this code to move items to the right.
<div class="collapse navbar-collapse justify-content-end">
Use ml-auto instead of mr-auto after applying nav justify-content-end to the ul
Just add mr-auto class at ul:
<ul class="nav navbar-nav mr-auto">
If you have menu list in both side you can do something like this:
<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">
<a class="nav-link disabled" href="#">Disabled</a>
</li>
</ul>
<ul class="navbar-nav ml-auto">
<li class="nav-item active">
<a class="nav-link" href="#">left 1</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">left 2</a>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#">left disable</a>
</li>
</ul>
If you want Home, Features and Pricing on left immediately after your nav-brand, and then login and register on right then wrap the two lists in <div> and use .justify-content-between:
<div class="collapse navbar-collapse justify-content-between">
<ul>....</ul>
<ul>...</ul>
</div>
In bootstrap v4.3 just add ml-auto in <ul class="navbar-nav">
Ex:<ul class="navbar-nav ml-auto">
use the flex-row-reverse class
<nav class="navbar navbar-toggleable-md navbar-light">
<div class="container">
<button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false"
aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<a class="navbar-brand" href="#">
<i class="fa fa-hospital-o fa-2x" aria-hidden="true"></i>
</a>
<div class="collapse navbar-collapse flex-row-reverse" id="navbarNavAltMarkup">
<ul class="navbar-nav">
<li><a class="nav-item nav-link active" href="#" style="background-color:#666">Home <span class="sr-only">(current)</span></a</li>
<li><a class="nav-item nav-link" href="#">Doctors</a></li>
<li><a class="nav-item nav-link" href="#">Specialists</a></li>
<li><a class="nav-item nav-link" href="#">About</a></li>
</ul>
</div>
</div>
</nav>
It's little change in boostrap 4.
To align navbar to right side, you've to make only two changes.
they are:
in navbar-nav class add w-100 as navbar-nav w-100 to make width as 100
in nav-item dropdown class add ml-auto as nav-item dropdown ml-auto to make margin left as auto.
If you didn't understand, please refer the image that i've attached to this.
CodePen Link
Full source code
<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="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNavDropdown">
<ul class="navbar-nav w-100">
<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="#">Features</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricing</a>
</li>
<li class="nav-item dropdown ml-auto">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown link
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
</ul>
</div>
</nav>
For bootstrap 4.3.1, I was using nav-pills and nothing worked for me except this:
<ul class="nav nav-pills justify-content-end ml-auto">
<li ....</li>
</ul>
In my case Bootstrap v5, I wanted just one set of navigation options to the right side:
just add "ms-auto" in ul.
And it helped me.
<div class="collapse navbar-collapse" id="navbarCollapse">
<ul class="navbar-nav ms-auto mb-2 mb-md-0">
<li class="nav-item">
<a class="nav-link " aria-current="page" href="index.php">Home</a>
</li>
<li class="nav-item">
<a class="nav-link " href="services.php" tabindex="-1" aria-disabled="true">Services</a>
</li>
<li class="nav-item">
<a class="nav-link" href="aboutus.php">About Us</a>
</li>
<li class="nav-item">
<a class="nav-link" href="Portfolio.php">Portfolio</a>
</li>
</ul>
</div>
The above answers surprisingly didn't work for me so here is my approach. To align the login and register navigation bar items to the right you can make use of either of these two ways:
pull-right:
Modify the unordered list tag for login and register as
<ul class="navbar-nav pull-right">
navbar-right:
Modify the unordered list tag for login and register as
<ul class="navbar-nav navbar-right">
I am running Angular 4 (v.4.0.0) and ng-bootstrap (Bootstrap 4). This code won't all be relevant but hoping people can pick and choose what works. It took me sometime to find a solution to get my items to justify right, collapse properly and to implement a dropdown off my google (using OAuth) profile picture.
<div id="header" class="header">
<nav class="navbar navbar-toggleable-sm navbar-inverse bg-faded fixed-top">
<button class="navbar-toggler navbar-toggler-right" 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>
<a class="navbar-brand" href="#">
<img alt='Brand' src='../assets/images/logo-white.png' class='navbar-logo-img d-inline-block align-top '>
<span class="navbar-logo-text">Oncoscape</span>
</a>
<div class="collapse navbar-collapse justify-content-end" id="navbarSupportedContent">
<ul class="navbar-nav float-left">
<a class="navbar-items nav-item nav-link active " *ngIf='authenticated' (click)='goDashboard()'>
<span class="fa fa-dashboard"></span>Dashboard
</a>
<a class="nav-item nav-link navbar-items active" href="http://resources.sttrcancer.org/oncoscape-contact">
<span class="fa fa-comments"></span>Feedback
</a>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
<img *ngIf='user && authenticated' class="navbar-pic" src={{user.thumbnail}} alt="Smiley face">
</a>
<div *ngIf='user && authenticated' class="dropdown-menu " aria-labelledby="navbarDropdownMenuLink">
<a class="dropdown-item" (click)="toProfile()">Account</a>
<div class="dropdown-item">
<app-login></app-login>
</div>
</div>
</li>
</ul>
</div>
</nav>
</div>
<router-outlet></router-outlet>
For Bootstrap 4 beta, sample navbar with elements aligned to the right side is:
<div id="app" class="container">
<nav class="navbar navbar-expand-md navbar-light bg-faded">
<button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<a class="navbar-brand" href="#">Navbar</a>
<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="#">Features</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricingg</a>
</li>
</ul>
<ul class="navbar-nav">
<li class="nav-item">
<a class="nav-link" href="{{ url('/login') }}">Login</a>
</li>
<li class="nav-item">
<a class="nav-link" href="{{ url('/register') }}">Register</a>
</li>
</ul>
</nav>
</div>
Using the bootstrap flex box helps
us to control the placement and alignment of your navigation element.
for the problem above adding mr-auto is a better solution to it .
<div id="app" class="container">
<nav class="navbar navbar-toggleable-md navbar-light bg-faded">
<button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<a class="navbar-brand" href="#">Navbar</a>
<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="#">Features</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricingg</a>
</li>
</ul>
<ul class="navbar-nav " >
<li class="nav-item">
<a class="nav-link" href="{{ url('/login') }}">Login</a>
</li>
<li class="nav-item">
<a class="nav-link" href="{{ url('/register') }}">Register</a>
</li>
</ul>
</nav>
#yield('content')
</div>
other placement may include
fixed- top
fixed bottom
sticky-top
The working example for BS v4.0.0-beta.2:
<body>
<nav class="navbar navbar-expand-md navbar-dark bg-dark">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNavDropdown">
<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="#">Features</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricingg</a>
</li>
</ul>
<ul class="navbar-nav">
<li class="nav-item">
<a class="nav-link" href="#">Login</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Register</a>
</li>
</ul>
</div>
</nav>
<div class="container-fluid">
container content
</div>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="node_modules/jquery/dist/jquery.slim.min.js"></script>
<script src="node_modules/popper.js/dist/umd/popper.min.js"></script>
<script src="node_modules/bootstrap/dist/js/bootstrap.min.js"></script>
</body>
If all above fails, I added 100% width to the navbar class in CSS. Until then mr auto wasn't working for me on this project using 4.1.
but the nav item you want to align to right in alone
put it outside the of main nav but in the same , like that:
<ul class="navbar-nav justify-content-end ms-auto">
<li class="nav-item">
<a class="nav-link" href="#" aria-expanded="false">Contact support</a>
</li>
<li class="nav-item ">
<a class="nav-link" href="#" aria-expanded="false">Log in</a>
</li>
</ul>
use justify-content-end ms-auto
Find the 69 line in the verndor-prefixes.less and write it following:
.panel {
margin-bottom: 20px;
height: 100px;
background-color: #fff;
border: 1px solid transparent;
border-radius: 4px;
-webkit-box-shadow: 0 1px 1px rgba(0,0,0,.05);
box-shadow: 0 1px 1px rgba(0,0,0,.05);
}
Just copied this from one of the getbootstrap pages for the released version 4 which worked much better than the above
<div class="d-none d-xl-block col-xl-2 bd-toc float-md-right">
<ul class="section-nav">
<li class="toc-entry toc-h2">Overview</li>
<li class="toc-entry toc-h2">Classes</li>
<li class="toc-entry toc-h2">Mixins</li>
<li class="toc-entry toc-h2">Responsive</li>
</ul>
</div>
I'm new to stack overflow and new to front end development. This is what worked for me. So I did not want list items to be displayed.
.hidden {
display:none;
}
#loginButton{
margin-right:2px;
}
<nav class="navbar navbar-toggleable-md navbar-light bg-faded fixed-top">
<button class="navbar-toggler navbar-toggler-right" 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>
<a class="navbar-brand" href="#">NavBar</a>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item active hidden">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item hidden">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item hidden">
<a class="nav-link disabled" href="#">Disabled</a>
</li>
</ul>
<form class="form-inline my-2 my-lg-0">
<button class="btn btn-outline-success my-2 my-sm-0" type="submit" id="loginButton">Log In</button>
<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Register</button>
</form>
</div>
</nav>

How do I change the position of a drop down menu in Bootstrap? I tried using data-offset or data-reference but they didn't work

My dropdown menu starts from the left of the page and its position is not relative to the list items.
<div>
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container justify-content-between">
<a class="navbar-brand" href="#">ARARAT</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 dropdown-menu-end mx-auto">
<li class="nav-item active">
<a class="nav-link py-3 px-3" href="#" data-bs-toggle="collapse"
data-bs-target=".navbar-collapse.show">Home</a>
</li>
<li class="nav-item">
<a class="nav-link py-3 px-3" href="#" data-bs-toggle="collapse"
data-bs-target=".navbar-collapse.show">About</a>
</li>
<li class="nav-item">
<a class="nav-link py-3 px-3" href="#" data-bs-toggle="collapse"
data-bs-target=".navbar-collapse.show">Products</a>
</li>
<li class="nav-item">
<a class="nav-link py-3 px-3" href="#" data-bs-toggle="collapse"
data-bs-target=".navbar-collapse.show">Services</a>
</li>
<li class="nav-item">
<a class="nav-link dropdown-toggle py-3 px-3" href="#" id="navbarDropdownMenuLink"
role="button" data-bs-toggle="dropdown" aria-expanded="true">Blog</a>
<ul class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">
<li><a class="dropdown-item" href="#">d1</a></li>
<li><a class="dropdown-item" href="#">d2</a></li>
<li><a class="dropdown-item" href="#">d3</a></li>
<li><a class="dropdown-item" href="#">d4</a></li>
</ul>
</li>
<li class="nav-item">
<a class="nav-link dropdown-toggle py-3 px-3" href="#" id="navbarDropdownMenuLink"
role="button" data-bs-toggle="dropdown" aria-expanded="true">Pages</a>
<ul class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">
<li><a class="dropdown-item" href="#">P1</a></li>
<li><a class="dropdown-item" href="#">P2</a></li>
<li><a class="dropdown-item" href="#">P3</a></li>
<li><a class="dropdown-item" href="#">P4</a></li>
</ul>
</li>
<li class="nav-item">
<a class="nav-link py-3 px-3" href="#" data-bs-toggle="collapse"
data-bs-target=".navbar-collapse.show">Contact</a>
</li>
</ul>
<button class="btn bg-transparent fs-6 PX-5 PY-5" type="submit">GET IN TOUCH</button>
</div>
</div>
</nav>
</div>
Here I'm attaching a photo for the result I get... I want the list of (P1, P2, ...) be under the "pages" list item. Thank you
I think why your pages dropdown is not working is you gave the same id to your both dropdown menu.
id="navbarDropdownMenuLink"
Try to change one of the dropdown'd id. Remember, If two Bootstrap dropdown menus have the same id and aria-labelledby values, the first dropdown will function correctly but the second dropdown will not work as expected.

bootstrap navbar dropdown list

<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="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNavDropdown">
<ul class="navbar-nav">
<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="#">Features</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricing</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown link
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
</ul>
</div>
</nav>
this is the code for navbar with dropdowns in bootstrap. but the problem is here dropdown is not working when is a toggle to the navbar dropdown icon
code Link: https://getbootstrap.com/docs/4.0/components/navbar/
any suggestions why it isn't working for react??
You need to use reactstrap npm package together with bootstrap. have a look here: https://reactstrap.github.io/
You should use react-bootstrap. It works fine with react and is specially made for react.
https://react-bootstrap.github.io/components/navbar/#navbars-overview

bootstrap 4 navbar fade in\out when scrolling in a rails app

I'm trying to figure out how to have a top navbar in bootstrap 4 and then when the user scrolls down a little on the page have the navbar fade in I can currently get the navbar to show up using the below script, however, it doesn't fade in it just immediately shows up very fast and awkwardly.
<script>
$(document).scroll(function(e){
var scrollTop = $(document).scrollTop();
if(scrollTop > 200){
$('.navbar').removeClass('static-top').addClass('fixed-top');
} else {
$('.navbar').removeClass('fixed-top').addClass('static-top');
}
});
</script>
<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-primary my-2 my-sm-0" type="submit">Search</button>
</form>
</div>
</nav><!--./nav-->
I'm looking for a navbar effect like this http://bootstraplovers.com/assan-v3.6/classic-template/html/index.html
$('.navbar').removeClass('static-top').addClass('fixed-top');
before calling .removeClass() you need to call .toggle() or other similar jquery effects. Refer to the documentation
.toggle() would hide the navbar, so maybe you want to post your question in the relevant stackoverflow section (jquery), think about how you want to build this animation and search the jquery documentation...

Twitter Bootstrap v4 and jQuery 3.2.1

I'm trying to migrate to the new version of bootstrap and jQuery.
Dropdown in example not working and console outputs error:
> Syntax error, unrecognized expression: #
This is my code:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" rel="stylesheet"/>
<nav class="navbar navbar-toggleable-md navbar-light bg-faded">
<button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<a class="navbar-brand" href="#">Navbar</a>
<div class="collapse navbar-collapse" id="navbarNavDropdown">
<ul class="navbar-nav">
<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="#">Features</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricing</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="http://example.com" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown link
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
</ul>
</div>
</nav>
jquery doesn't add class "show" to parent li and doesn't change aria-expanded attribute.
Seems like jquery v3.2.1 not compatible with botstrap v4, but i saw examples which uses this versions.
Please, help me to resolve this problem.
You did not include Popper.js in your markup.
The javascript part of Bootstrap 4 has been built on top of jQuery and Popper.js. As the documentation points it out: "jQuery must come first, then Popper.js, and then our JavaScript plugins". Including Popper.js will eliminate your error.
Additionally, it is also suggested that these <script> tags should go to near to the end of the pages, right before the closing </body> tag.
So your markup should look like this:
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" rel="stylesheet"/>
<nav class="navbar navbar-toggleable-md navbar-light bg-faded">
<button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<a class="navbar-brand" href="#">Navbar</a>
<div class="collapse navbar-collapse" id="navbarNavDropdown">
<ul class="navbar-nav">
<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="#">Features</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricing</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="http://example.com" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown link
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
</ul>
</div>
</nav>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.3/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js"></script>

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