Bootstrap 4 mobile nav bar slide from left

Question

I am using the latest version of bootstrap. Kind of tried various things on my own and after that I thought I might find something on stackoverflow. But kind didn't get the thing. I mean how it works?

This is my code. I am not gonna add any custom style here since they didn't really work that well instead they created some error.

I also checked this post also Bootstrap - How to slide nav bar from left instead from top I tried all the answer from there but it didn't work for me.

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">

    <nav class="navbar navbar-toggleable-md navbar-inverse fixed-top bg-inverse">
	<button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarCollapse" aria-controls="navbarCollapse" aria-expanded="false" aria-label="Toggle navigation">
	<span class="navbar-toggler-icon"></span>
	</button>
	<a class="navbar-brand" href="">Roknil Style</a>
	<div class="collapse navbar-collapse" id="navbarCollapse">
		<ul class="navbar-nav mr-auto">
			<li class="nav-item active">
				<a class="nav-link" href="#">Home</a>
			</li>
			<li class="nav-item">
				<a class="nav-link" href="#">Link</a>
			</li>
			<li class="nav-item">
				<a class="nav-link" href="#">About</a>
			</li>
		</ul>
		<form class="form-inline mt-2 mt-md-0">
		<input class="form-control mr-sm-2" type="text" placeholder="Search">
		<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
		</form>
	  </div>
    </nav>

<script src="https://code.jquery.com/jquery-3.1.1.slim.min.js" integrity="sha384-A7FZj7v+d/sdmMqp/nOQwliLvUsJfDHW+k9Omg/a/EheAdgtzNs3hpfag6Ed950n" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js" integrity="sha384-DztdAPBWPRXSA/3eYEEUWrWCy7G5KFbe8fFjk5JAIxUYHKkDx6Qin1DkWx51bBrb" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js" integrity="sha384-vBWWzlZJ8ea9aCX4pEW3rVHjgjt7zpkNpZk+02D9phzyeVkE+jo0ieGizqPLForn" crossorigin="anonymous"></script>

Answer 1

You can override the transition styles for the navbar-collapse like this...

Demo

@media (max-width: 992px) {
    .navbar-collapse {
        position: fixed;
        top: 50px; /* adjust to height of navbar */
        left: 0;
        padding-left: 15px;
        padding-right: 15px;
        padding-bottom: 15px;
        width: 75%;
        height: 100%;
    }

    .navbar-collapse.collapsing {
        left: -75%;
        transition: height 0s ease;
    }

    .navbar-collapse.show {
        left: 0;
        transition: left 300ms ease-in-out;
    }

    .navbar-toggler.collapsed ~ .navbar-collapse {
        transition: left 500ms ease-in-out;
    }
}

Demo - slide from right
Demo - slide from left
Demo - slide from left (full height)

Answer 2

Actually, you can use @Hrvoje Golcic's solution to implement the slide-from-left effect.

I checked your code and fixed some issues. Please check the following code snippet. You may need to define more CSS rules to style the navigation bar.

$(function(){
  // mobile menu slide from the left
  $('[data-toggle="slide-collapse"]').on('click', function() {
    $navMenuCont = $($(this).data('target'));
    $navMenuCont.animate({'width':'toggle'}, 280);
  });
})

    #navbarCollapse {
      position: fixed;
      top: 0;
      left: 0;
      z-index: 1;
      width: 280px; /*example + never use min-width with this solution */
      height: 100%;
      background: #000;
    }

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">

    <nav class="navbar navbar-toggleable-md navbar-inverse fixed-top bg-inverse">
	<button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="slide-collapse" data-target="#navbarCollapse" aria-controls="navbarCollapse" aria-expanded="false" aria-label="Toggle navigation">
	<span class="navbar-toggler-icon"></span>
	</button>
	<a class="navbar-brand" href="">Roknil Style</a>
	<div class="collapse navbar-collapse" id="navbarCollapse">
		<ul class="navbar-nav mr-auto">
			<li class="nav-item active">
				<a class="nav-link" href="#">Home</a>
			</li>
			<li class="nav-item">
				<a class="nav-link" href="#">Link</a>
			</li>
			<li class="nav-item">
				<a class="nav-link" href="#">About</a>
			</li>
		</ul>
		<form class="form-inline mt-2 mt-md-0">
		<input class="form-control mr-sm-2" type="text" placeholder="Search">
		<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
		</form>
	  </div>
    </nav>

<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js" integrity="sha384-DztdAPBWPRXSA/3eYEEUWrWCy7G5KFbe8fFjk5JAIxUYHKkDx6Qin1DkWx51bBrb" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js" integrity="sha384-vBWWzlZJ8ea9aCX4pEW3rVHjgjt7zpkNpZk+02D9phzyeVkE+jo0ieGizqPLForn" crossorigin="anonymous"></script>