AngularJS - Expressions
Expressions are used to bind application data to html. Expressions are written inside double braces like {{ expression}}. Expressions behaves in same way as ng-bind directives. AngularJS application expressions are pure javascript expressions and outputs the data where they are used.
Using numbers
<p>Expense on Books : {{cost * quantity}} Rs</p>
Using strings
<p>Hello {{student.firstname + " " + student.lastname}}!</p>
Using object
<p>Roll No: {{student.rollno}}</p>
Using array
<p>Marks(Math): {{marks[3]}}</p>
Example
Following example will showcase all the above mentioned expressions.
testAngularJS.htm
<html>
<head>
<title>AngularJS Expressions</title>
</head>
<body>
<h1>Sample Application</h1>
<div ng-app = "" ng-init = "quantity = 1;cost = 30; student = {firstname:'Mahesh',lastname:'Parashar',rollno:101};marks = [80,90,75,73,60]">
<p>Hello {{student.firstname + " " + student.lastname}}!</p>
<p>Expense on Books : {{cost * quantity}} Rs</p>
<p>Roll No: {{student.rollno}}</p>
<p>Marks(Math): {{marks[3]}}</p>
</div>
<script src = "http://ajax.googleapis.com/ajax/libs/angularjs/1.3.14/angular.min.js"></script>
</body>
</html>