Develop Reference

Bootstrap Tab pills not working or linking with tab panel

I have created a bootstrap pills in my website but its is not working the way its showed on documentation. when I click on the pill its not opening the specific tab panel. here am attaching the code.Here am tring to add tabs pills linking with specific contents below in divs. Don't know what am missing in the code but when i click on the tab the contents are not changing.
<script>
$(".nav li a").on("click", function() {
$(".nav li a").removeClass("active");
$(this).addClass("active");
});
</script>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" rel="stylesheet"/>
<main role="main" class="container">
<div class="text-center mt-5 pt-5">
<h1>Verbal Ability :: Comprehension</h1>
<p class="lead">Use this document as a way to quickly start any new project.<br> All you get is this text and a mostly barebones HTML document.</p>
</div>
<!--Test Links-->
<div class="overflow-auto bg-light" style="height: 200px;">
<ol class="nav nav-pills flex-column">
<li class="nav-item">
<a class="nav-link active" href="#home" data-toggle="pill">Comprehension - Section 1</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#profile" data-toggle="pill">Comprehension - Section 2</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#" data-toggle="pill">Comprehension - Section 3</a>
</li>
</ol>
</div>
<div class="tab-content">
<div id="home" class="tab-pane fade show active" role="tabpanel">Content 1</div>
<div id="profile" class="tab-pane fade" role="tabpanel">Content 2</div>
</div>
</main><!-- /.container -->
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"></script>
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"></script>

You should load jQuery before loading Bootstrap. Please read the docs properly.
Your script method of adding a class("active") was wrong. There is an inbuilt method provided by Bootstrap .tab("show") which then enables the tab to toggle properly as per the given ID's
I have changed the snippet and it's working now. Kindly go through this https://www.w3schools.com/bootstrap/bootstrap_ref_js_tab.asp to learn more in detail.
$(document).ready(function(){
$(".nav-item a").click(function(){
$(this).tab('show');
});
});
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" rel="stylesheet"/>
<main role="main" class="container">
<div class="text-center mt-5 pt-5">
<h1>Verbal Ability :: Comprehension</h1>
<p class="lead">Use this document as a way to quickly start any new project.<br> All you get is this text and a mostly barebones HTML document.</p>
</div>
<!--Test Links-->
<div class="overflow-auto bg-light" style="height: 200px;">
<ol class="nav nav-pills flex-column">
<li class="nav-item">
<a class="nav-link active" href="#home" data-toggle="pill">Comprehension - Section 1</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#profile" data-toggle="pill">Comprehension - Section 2</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#third" data-toggle="pill">Comprehension - Section 3</a>
</li>
</ol>
</div>
<div class="tab-content">
<div id="home" class="tab-pane fade show active" role="tabpanel">Content 1</div>
<div id="profile" class="tab-pane fade" role="tabpanel">Content 2</div>
<div id="third" class="tab-pane fade" role="tabpanel">Content 3</div>
</div>
</main><!-- /.container -->
<!-- jQuery should come before loading boostrap -->
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"></script>

Bootstrap tab dropdown doesn't show after 1st click

In my sample code below, the dropdown tab contents does not show after it's viewed for first time.
(function($) {
$(function() {
$('a[data-toggle = "tab"]').on('shown.bs.tab', function(e) {
// Get the name of active tab
var activeTab = $(e.target).text();
// Get the name of previous tab
var previousTab = $(e.relatedTarget).text();
$(".active-tab span").html(activeTab);
$(".previous-tab span").html(previousTab);
});
});
})(jQuery);
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<main class="main"></main>
<hr>
<p class="active-tab"><strong>Active Tab</strong>: <span></span></p>
<p class="previous-tab"><strong>Previous Tab</strong>: <span></span></p>
<hr>
<ul class="nav nav-tabs" role="tablist" id="myTab">
<li role="presentation" class="active">Home</li>
<li role="presentation">Details</li>
<li class="dropdown">
<a href="#" id="myTabDrop1" class="dropdown-toggle" data-toggle="dropdown">
Java
<b class="caret"></b>
</a>
<ul class="dropdown-menu" role="menu" aria-labelledby="myTabDrop1">
<li>
D1
</li>
<li>
D2
</li>
</ul>
</li>
</ul>
<div class="tab-content">
<div role="tabpanel" class="tab-pane active" id="home">
<p>This is the home page</p>
</div>
<div role="tabpanel" class="tab-pane" id="account-details">
<p>Pane 1</p>
</div>
<div role="tabpanel" class="tab-pane" id="d1">
<p>Dropdown 1</p>
</div>
<div role="tabpanel" class="tab-pane" id="d2">
<p>Dropdown 2</p>
</div>
</div>
</main>
<!-- Page style-->
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.bundle.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
</body>
</html>
When the active tab becomes one of the dropdown values (D1/D2) and when you change the active tab to any other tab, the Previous Tab: value becomes empty.
Now if I select dropdown 1 again, I don't see the content.
Any feedback is appreciated.
Thank you.

You are mixing up between Bootstrap v3 and v4 which causing this conflict, just remove the v4 one, (Your code is compatible with v3)
(function($) {
$(function() {
$('a[data-toggle = "tab"]').on('shown.bs.tab', function(e) {
// Get the name of active tab
var activeTab = $(e.target).text();
// Get the name of previous tab
var previousTab = $(e.relatedTarget).text();
$(".active-tab span").html(activeTab);
$(".previous-tab span").html(previousTab);
});
});
})(jQuery);
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
<!-- Main -->
<main class="main">
<hr>
<p class="active-tab"><strong>Active Tab</strong>: <span></span></p>
<p class="previous-tab"><strong>Previous Tab</strong>: <span></span></p>
<hr />
<ul class="nav nav-tabs" role="tablist" id="myTab">
<li role="presentation" class="active">Home</li>
<li role="presentation">Details</li>
<li class="dropdown">
Java<b class="caret"></b>
<ul class="dropdown-menu" role="menu" aria-labelledby="myTabDrop1">
<li>
D1
</li>
<li>
D2
</li>
</ul>
</li>
</ul>
<div class="tab-content">
<div role="tabpanel" class="tab-pane active" id="home">
<p>This is the home page</p>
</div>
<div role="tabpanel" class="tab-pane" id="account-details">
<p>Pane 1</p>
</div>
<div role="tabpanel" class="tab-pane" id="d1">
<p>Dropdown 1</p>
</div>
<div role="tabpanel" class="tab-pane" id="d2">
<p>Dropdown 2</p>
</div>
</div>
</main>
<!-- End main -->

Why href doesn't work inside nav tabs in boostrap v4?

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
</head>
<body>
<div class="row">
<div class="col-3">
<div class="nav flex-column nav-pills" id="v-pills-tab" role="tablist" aria-orientation="vertical">
<a class="nav-link active" id="v-pills-home-tab" data-toggle="pill" href="page1" role="tab">Home</a>
<a class="nav-link" id="v-pills-profile-tab" data-toggle="pill" href="page2" role="tab" >Profile</a>
<a class="nav-link" id="v-pills-messages-tab" data-toggle="pill" href="page3" role="tab" >Messages</a>
<a class="nav-link" id="v-pills-settings-tab" data-toggle="pill" href="page2" role="tab">Settings</a>
</div>
</div>
<div class="tab-content col-9" id="v-pills-tabContent">
</div>
</div>
<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/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>
</body>
</html>
I use boostrap4, and want to do a left navigation panel as the above example.
But I found that when I click each tab, the href does not work? I refer boostrap documents

Two things:
When you click any tab, there is no content to match inside tab-content, from where the text are actually shown.
You have to set the corresponding id of the content to the related tab's href by prefixing #.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
</head>
<body>
<div class="row">
<div class="col-3">
<div class="nav flex-column nav-pills" id="v-pills-tab" role="tablist" aria-orientation="vertical">
<a class="nav-link active" id="v-pills-home-tab" data-toggle="pill" href="#page1" role="tab">Home</a>
<a class="nav-link" id="v-pills-profile-tab" data-toggle="pill" href="#page2" role="tab" >Profile</a>
<a class="nav-link" id="v-pills-messages-tab" data-toggle="pill" href="#page3" role="tab" >Messages</a>
<a class="nav-link" id="v-pills-settings-tab" data-toggle="pill" href="#page4" role="tab">Settings</a>
</div>
</div>
<div class="tab-content col-9" id="v-pills-tabContent">
<div class="tab-pane fade show active" id="page1" role="tabpanel" aria-labelledby="v-pills-home-tab">Home content...</div>
<div class="tab-pane fade" id="page2" role="tabpanel" aria-labelledby="v-pills-profile-tab">Profile content...</div>
<div class="tab-pane fade" id="page3" role="tabpanel" aria-labelledby="v-pills-messages-tab">Messages content...</div>
<div class="tab-pane fade" id="page4" role="tabpanel" aria-labelledby="v-pills-settings-tab">Settings content...</div>
</div>
</div>
<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/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>
</body>
</html>

You're missing the tab content.
https://getbootstrap.com/docs/4.0/components/navs/#v-pills-tab
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
</head>
<body>
<div class="row">
<div class="col-3">
<div class="nav flex-column nav-pills" id="v-pills-tab" role="tablist" aria-orientation="vertical">
<a class="nav-link active" id="v-pills-page-1" data-toggle="pill" href="#page1" role="tab" aria-controls="v-pills-page-1" aria-selected="true">Page 1</a>
<a class="nav-link" id="v-pills-page-2" data-toggle="pill" href="#page2" role="tab" aria-controls="v-pills-page-2" aria-selected="false">Page 2</a>
<a class="nav-link" id="v-pills-page-3" data-toggle="pill" href="#page3" role="tab" aria-controls="v-pills-page-3" aria-selected="false">Page 3</a>
<a class="nav-link" id="v-pills-page-4" data-toggle="pill" href="#page4" role="tab" aria-controls="v-pills-page-4" aria-selected="false">Page 4</a>
</div>
</div>
<div class="tab-content col-9" id="v-pills-tabContent">
<div class="tab-pane fade show active" id="page1" role="tabpanel" aria-labelledby="v-pills-page-1">page 1 content</div>
<div class="tab-pane fade" id="page2" role="tabpanel" aria-labelledby="v-pills-page-2">page 2 content</div>
<div class="tab-pane fade" id="page3" role="tabpanel" aria-labelledby="v-pills-page-3">page 3 content</div>
<div class="tab-pane fade" id="page4" role="tabpanel" aria-labelledby="v-pills-page-4">page 4 content</div>
</div>
</div>
<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/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>
</body>
</html>

All Cards Not Getting Styled

I am attempting to make an example prototype that uses two cards from Bootstrap 4 to show the information from a form and hold the information from a second related form in the second card. Right now, it looks like this:
Here is a JSFiddle with the code which i've already taken the step of introducing a specific class and selector in the style tag.
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.3/css/bootstrap.min.css" integrity="sha384-Zug+QiDoJOrZ5t4lssLdxGhVrurbmBWopoEl+M6BdEfwnCJZtKxi1KgxUyJq13dy" crossorigin="anonymous">
<style>
div.card {
max-height: 50%;
min-height: 30%;
}
.wuformheader {
color: white;
padding-bottom: 0px;
background-color: blue;
}
ul.nav-tabs {
border-bottom: 0px;
}
div.card-header li.nav-item> a.active {
color: black;
background-color: white;
}
div.card-header li.nav-item> a {
color: white;
}
</style>
<title>Review Template</title>
</head>
<body>
<div class="card">
<div class="card-header wuformheader">
<ul class="nav nav-tabs" id="myTabs" role="tablist">
<li class="nav-item">
<a class="nav-link active" id="nav-study-tab" data-toggle="tab" href="#study" role="tab" ari-controls="study" aria-selected="true">Study Information</a>
</li>
<li class="nav-item">
<a class="nav-link" id="nav-dept-tab" data-toggle="tab" href="#dept" role="tab" ari-controls="dept" aria-selected="false">Department Information</a>
</li>
<li class="nav-item">
<a class="nav-link" id="nav-contact-tab" data-toggle="tab" href="#contact" role="tab" ari-controls="contact" aria-selected="false">Contacts</a>
</li>
<li class="nav-item">
<a class="nav-link" id="nav-lab-tab" data-toggle="tab" href="#lab" role="tab" ari-controls="lab" aria-selected="false">Laboratory</a>
</li>
<li class="nav-item">
<a class="nav-link" id="nav-form-approvals-tab" data-toggle="tab" href="#formapprovals" role="tab" ari-controls="formapprovals" aria-selected="false">Approvals</a>
</li>
</ul>
</div>
<div class="card-body">
<div class="tab-content" id="nav-formTabContent">
<div class="tab-pane fade show active" id="study" role="tabpanel" aria-labelledby="nav-study-tab">
Study Tab!
</div>
<div class="tab-pane fade" id="dept" role="tabpanel" aria-labelledby="nav-dept-tab">
Department Tab!
</div>
<div class="tab-pane fade" id="contact" role="tabpanel" aria-labelledby="nav-dept-tab">
Contacts Tab!
</div>
<div class="tab-pane fade" id="lab" role="tabpanel" aria-labelledby="nav-dept-tab">
Labs!
</div>
<div class="tab-pane fade" id="formapprovals" role="tabpanel" aria-labelledby="nav-form-approvals-tab">
formapprovals!
</div>
</div>
</div>
</div>
<br/>
<div class="card">
<div="card-header wuformheader">
<ul class="nav nav-tabs" id="review-tabs" role="tablist">
<li class="nav-item">
<a class="nav-link active" id="nav-notes-tab" data-toggle="tab" href="#notes" role="tab" ari-controls="notes" aria-selected="true">Notes</a>
</li>
<li class="nav-item">
<a class="nav-link" id="nav-criteria-tab" data-toggle="tab" href="#criteria" role="tab" ari-controls="criteria" aria-selected="false">Criteria</a>
</li>
<li class="nav-item">
<a class="nav-link" id="nav-approvals-tab" data-toggle="tab" href="#reviewapprovals" role="tab" ari-controls="reviewapprovals" aria-selected="true">Approval</a>
</li>
</ul>
</div>
<div="card-body">
<div class="tab-content" id="nav-reviewTabContent">
<div class="tab-pane fade show active" id="notes" role="tabpanel" aria-labelledby="nav-notes-tab">
Notes tab
</div>
<div class="tab-pane fade" id="criteria" role="tabpanel" aria-labelledby="nav-criteria-tab">
Criteria Tab
</div>
<div class="tab-pane fade" id="reviewapprovals" role="tabpanel" aria-labelledby="nav-approvals-tab">
Approvals
</div>
</div>
</div>
</div>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.3/js/bootstrap.min.js" integrity="sha384-a5N7Y/aK3qNeh15eJKGWxsqtnX/wWdSZSKp+81YjTmS15nvnvxKHuzaWwXHDli+4" crossorigin="anonymous"></script>
</body>
</html>
What needs to change for both cards to have the correct (Top in the image) styling?

You have a typo in your html on line 83 in your jsfiddle:
<div="card-header wuformheader">
It should be:
<div class="card-header wuformheader">
You deleted the word "class"

TypeError: $element.epoch is not a function

I'm using AngularJS and Epoch with ng-epoch directive wrapper.
Here is my module file
angular.module('RDash', ['ui.bootstrap', 'ui.router', 'ngCookies','ng-oboe','ng.epoch'])
.config(function (oboeProvider) {
/* If we were so inclined, we could change the oboe defaults here - headers, etc. */
// oboeProvider.defaults = {};
});
I didn't make any changes in controller. Because I want to show just chart outline without data at page.
Here is my template file:
<div class="row" ng-controller="StatsCtrl">
<div class="col-lg-12">
<rd-widget>
<rd-widget-header icon="fa fa-line-chart" title="Cpu">
</rd-widget-header>
<rd-widget-body classes="medium no-padding">
<epoch-live-line chart-height="200" chart-data="" chart-stream=""> </epoch-live-line>
</rd-widget-body>
</rd-widget>
</div>
<div class="col-lg-12">
<rd-widget>
<rd-widget-header icon="fa fa-area-chart" title="Memory">
</rd-widget-header>
<rd-widget-body classes="medium no-padding">
</rd-widget-body>
</rd-widget>
</div>
</div>
Also here is my index
<!doctype html>
<html lang="en" ng-app="RDash">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>RDash AngularJS</title>
<!-- STYLES -->
<!-- build:css lib/css/main.min.css -->
<link rel="stylesheet" type="text/css" href="components/bootstrap/dist/css/bootstrap.min.css">
<link rel="stylesheet" type="text/css" href="components/font-awesome/css/font-awesome.min.css">
<link rel="stylesheet" type="text/css" href="components/rdash-ui/dist/css/rdash.min.css">
<link rel="stylesheet" type="text/css" href="components/epoch/epoch.min.css" />
<!-- endbuild -->
<!-- SCRIPTS -->
<!-- build:js lib/js/main.min.js -->
<script type="text/javascript" src="components/angular/angular.min.js"></script>
<script type="text/javascript" src="components/angular-bootstrap/ui-bootstrap-tpls.min.js"></script>
<script type="text/javascript" src="components/angular-cookies/angular-cookies.min.js"></script>
<script type="text/javascript" src="components/angular-ui-router/release/angular-ui-router.min.js"></script>
<script type="text/javascript" src="components/oboe/dist/oboe-browser.min.js"></script>
<script type="text/javascript" src="components/ng-oboe/dist/ng-oboe.js"></script>
<script type="text/javascript" src="components/d3/d3.min.js"></script>
<script type="text/javascript" src="components/epoch/epoch.min.js"></script>
<script type="text/javascript" src="components/ng-epoch/ng-epoch.js"></script>
<!-- endbuild -->
<!-- Custom Scripts -->
<script type="text/javascript" src="js/dashboard.min.js"></script>
</head>
<body ng-controller="MasterCtrl">
<div id="page-wrapper" ng-class="{'open': toggle}" ng-cloak>
<!-- Sidebar -->
<div id="sidebar-wrapper">
<ul class="sidebar">
<li class="sidebar-main">
<a ng-click="toggleSidebar()">
Dashboard
<span class="menu-icon glyphicon glyphicon-transfer"></span>
</a>
</li>
<li class="sidebar-title"><span>NAVIGATION</span></li>
<li class="sidebar-list">
Dashboard <span class="menu-icon fa fa-tachometer"></span>
</li>
<li class="sidebar-list">
Tables <span class="menu-icon fa fa-table"></span>
</li>
</ul>
<div class="sidebar-footer">
<div class="col-xs-4">
<a href="https://github.com/rdash/rdash-angular" target="_blank">
Github
</a>
</div>
<div class="col-xs-4">
<a href="https://github.com/rdash/rdash-angular/README.md" target="_blank">
About
</a>
</div>
<div class="col-xs-4">
<a href="#">
Support
</a>
</div>
</div>
</div>
<!-- End Sidebar -->
<div id="content-wrapper">
<div class="page-content">
<!-- Header Bar -->
<div class="row header">
<div class="col-xs-12">
<div class="user pull-right">
<div class="item dropdown">
<a href="#" class="dropdown-toggle">
<img src="img/avatar.jpg">
</a>
<ul class="dropdown-menu dropdown-menu-right">
<li class="dropdown-header">
Joe Bloggs
</li>
<li class="divider"></li>
<li class="link">
<a href="#">
Profile
</a>
</li>
<li class="link">
<a href="#">
Menu Item
</a>
</li>
<li class="link">
<a href="#">
Menu Item
</a>
</li>
<li class="divider"></li>
<li class="link">
<a href="#">
Logout
</a>
</li>
</ul>
</div>
<div class="item dropdown">
<a href="#" class="dropdown-toggle">
<i class="fa fa-bell-o"></i>
</a>
<ul class="dropdown-menu dropdown-menu-right">
<li class="dropdown-header">
Notifications
</li>
<li class="divider"></li>
<li>
Server Down!
</li>
</ul>
</div>
</div>
<div class="meta">
<div class="page">
Dashboard
</div>
<div class="breadcrumb-links">
Home / Dashboard
</div>
</div>
</div>
</div>
<!-- End Header Bar -->
<!-- Main Content -->
<div ui-view></div>
</div><!-- End Page Content -->
</div><!-- End Content Wrapper -->
</div><!-- End Page Wrapper -->
</body>
</html>
Why I am getting this error? I can't figure out.
TypeError: $element.epoch is not a function
at h.$scope.renderEpoch (http://localhost:4444/lib/js/main.min.js:434:28)
at liveLineFunction (http://localhost:4444/lib/js/main.min.js:504:28)
at http://localhost:4444/lib/js/main.min.js:65:60
at K (http://localhost:4444/lib/js/main.min.js:55:142)
at g (http://localhost:4444/lib/js/main.min.js:47:397)
at http://localhost:4444/lib/js/main.min.js:47:17
at http://localhost:4444/lib/js/main.min.js:48:359
at w (http://localhost:4444/lib/js/main.min.js:52:291)
at za.link (http://localhost:4444/lib/js/main.min.js:206:239)
at K (http://localhost:4444/lib/js/main.min.js:55:142) <div class="epoch ng-scope ng-isolate-scope" chart-height="200" chart-data="" chart-stream="">

As per the preparation section here, you need to load jQuery first and then epoch.js like below.
If you do not already have jQuery and AngularJS included:
<script src="[PATH_TO_BOWER_COMPNENTS]/jquery/dist/jquery.min.js"></script>
<script src="[PATH_TO_BOWER_COMPNENTS]/angular/angular.min.js"></script>
After you load those two libraries, include:
<script src="[PATH_TO_BOWER_COMPNENTS]/d3/d3.min.js"></script>
<script src="[PATH_TO_BOWER_COMPNENTS]/epoch/epoch.min.js"></script>
<script src="[PATH_TO_BOWER_COMPNENTS]/ng-epoch/ng-epoch.js"></script>