Outline, using suitable coding examples, the advantages and disadvantages of using a JavaScript framework, such as AngularJS. Demonstrate how you could use AngularJS to create a simple Navigation Menu
Advantages of JavaScript Framework -
Disadvantages of JavaScript Framework -
Application Programming Interface (API). Most of the developers encounter is the Application Programming Interface (API) keeps on changing at frequent intervals and does not remain stable. At times, a new API appears having a number of backwards-incompatible changes.
Asynchronous Programming Model. If you want to make the applications more scalable, the necessary requisite is adoption of the asynchronous programming model. However, many developers may find this programming model to be more difficult in comparison to the linear blocking I/O programming.
Code of AngularJS to create a simple Navigation Menu -
/*-------------------------
Simple reset
--------------------------*/
*{
margin:0;
padding:0;
}
/*-------------------------
General Styles
--------------------------*/
body{
font:15px/1.3 'Open Sans', sans-serif;
color: #5e5b64;
text-align:center;
}
a, a:visited {
outline:none;
color:#389dc1;
}
a:hover{
text-decoration:none;
}
section, footer, header, aside, nav{
display: block;
}
/*-------------------------
The menu
--------------------------*/
nav{
display:inline-block;
margin:60px auto 45px;
background-color:#55B460;
box-shadow:0 1px 1px #ccc;
border-radius:2px;
}
nav a{
display:inline-block;
padding: 18px 30px;
color:#fff !important;
font-weight:bold;
font-size:16px;
text-decoration:none !important;
line-height:1;
text-transform: uppercase;
background-color:transparent;
-webkit-transition:background-color 0.25s;
-moz-transition:background-color 0.25s;
transition:background-color 0.25s;
}
nav a:first-child{
border-radius:2px 0 0 2px;
}
nav a:last-child{
border-radius:0 2px 2px 0;
}
nav.home .home,
nav.team.team,
nav.about .about,
nav.contact .contact{
background-color:#5867E3;
}
p{
font-s
color:#7d9098;
}
p b{
color:#ffffff;
display:inline-block;
padding:5px 10px;
background-color:#DC64C6;
border-radius:2px;ize:22px;
font-weight:bold;
text-transform:uppercase;
font-size:18px;
}
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<link href="http://fonts.googleapis.com/css?family=Open+Sans:400,700" rel="stylesheet" />
<!-- The main CSS file
-->
<link href="style.css"
rel="stylesheet" />
<!--[if lt IE 9]>
<script
src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
</head>
<!-- The ng-app directive tells angular that the code below should be evaluated -->
<body ng-app>
<!-- The navigation menu will
get the value of the "active" variable as a class.
The
$event.preventDefault() stops the page from jumping when a link is
clicked. -->
<nav class="{{active}}" ng-click="$event.preventDefault()">
<!-- When a link in the menu is clicked, we set the active variable -->
<a
href="#" class="home"
ng-click="active='home'">Home</a>
<a href="#"
class="about" ng-click="active='about'">About</a>
<a href="#"
class="contact"
ng-click="active='contact'">Contact</a>
</nav>
<!-- ng-show will show an
element if the value in the quotes is truthful,
while ng-hide
does the opposite. Because the active variable is not set
initially, this
will cause the first paragraph to be visible. -->
<p ng-show="active">You chose
<b>{{active}}</b></p>
<!-- Include AngularJS from
Google's CDN -->
<script
src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.7/angular.min.js"></script>
</body>
</html>
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