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AngularJS Filters

Filters are used to change modify the data and can be clubbed in expression or directives using pipe character. Following is the list of commonly used filters.

1 uppercase converts a text to upper case text.
2 lowercase converts a text to lower case text.
3 currency formats text in a currency format.
4 filter filter the array to a subset of it based on provided criteria.
5 orderby orders the array based on provided criteria.

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<html>
<head>
<title>Angular JS Filters</title>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.3.14/angular.min.js"></script>
</head>
<body>
<h2>AngularJS Sample Application</h2>
<div ng-app="mainApp" ng-controller="studentController">
<table border="0">
<tr><td>Enter first name:</td><td><input type="text" ng-model="student.firstName"></td></tr>
<tr><td>Enter last name: </td><td><input type="text" ng-model="student.lastName"></td></tr>
<tr><td>Enter fees: </td><td><input type="text" ng-model="student.fees"></td></tr>
<tr><td>Enter subject: </td><td><input type="text" ng-model="subjectName"></td></tr>
</table>
<br/>
<table border="0">
<tr><td>Name in Upper Case: </td><td>{{student.fullName() | uppercase}}</td></tr>
<tr><td>Name in Lower Case: </td><td>{{student.fullName() | lowercase}}</td></tr>
<tr><td>fees: </td><td>{{student.fees | currency}}</td></tr>
<tr><td>Subject:</td><td>
<ul>
   <li ng-repeat="subject in student.subjects | filter: subjectName |orderBy:'marks'">
      {{ subject.name + ', marks:' + subject.marks }}
   </li>
</ul>
</td></tr>
</table>
</div>
<script>
var mainApp = angular.module("mainApp", []);

mainApp.controller('studentController', function($scope) {
   $scope.student = {
      firstName: "Mahesh",
      lastName: "Parashar",
      fees:500,
      subjects:[
         {name:'Physics',marks:70},
         {name:'Chemistry',marks:80},
         {name:'Math',marks:65}
      ],
      fullName: function() {
         var studentObject;
         studentObject = $scope.student;
         return studentObject.firstName + " " + studentObject.lastName;
      }
   };
});
</script>
</body>
</html>

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