Skip to main content

What are filters in AngularJs?

The AngularJs Filters are used to display or modify the live data as per your filter text. We can write the filter expression using the pipe (|) character. i.e.

{{ yourData| filterTypes }}

There are different types of filter which as given below.

1. Uppercase Filter                                    click for live demo on punker
2. Lowercase Filter
3. Currency Filter
4. OrderBy Filter
5. Filter


Uppercase Filter : This is used to convert a input text to uppercase.
1
2
3
4
5
///The Uppercase angular Filter
First name:<input type="text" ng-model="employee.firstName">
Last name: <input type="text" ng-model="employee.lastName">
Display Upper Case: {{employee.fullName() | uppercase}}
///The Uppercase angular Filter

First name:<input type="text" ng-model="employee.firstName">
Last name: <input type="text" ng-model="employee.lastName">
Display Upper Case: {{employee.fullName() | uppercase}}

Lowercase Filter : This is used to convert a input text to lowercase.
1
2
3
4
5
///The Lowercase angular Filter
First name:<input type="text" ng-model="employee.firstName">
Last name: <input type="text" ng-model="employee.lastName">
Display Lower Case: {{employee.fullName() | lowercase}}
///The Lowercase angular Filter

First name:<input type="text" ng-model="employee.firstName">
Last name: <input type="text" ng-model="employee.lastName">
Display Lower Case: {{employee.fullName() | lowercase}}

Currency Filter : This is used to convert a formats text in a currency format.
1
2
3
4
///The Angular Currency Filter
Fees: <input type="text" ng-model="employee.fees">
Fees: {{employee.fees | currency}}
///The Angular Currency Filter

Fees: <input type="text" ng-model="employee.fees">
Fees: {{employee.fees | currency}}

OrderBy Filter : This is used to Order to the array by your criterias. The default OrderBy is asc.
1
2
3
4
5
6
7
///The Angular Currency Filter
<div>
  <divng-repeat="emp in employee.subjects | orderBy:'marks'">
    {{ emp.name + ', marks:' + emp.marks }}
  </div>
</div>
///The Angular Currency Filter

<div>
  <divng-repeat="emp in employee.subjects | orderBy:'marks'">
    {{ emp.name + ', marks:' + emp.marks }}
  </div>
</div>

filter : This is used to filter the array to a subset of your provided criterias.
1
2
3
4
5
6
7
8
9
///The Angular Filter
Enter Filter key:
<input type="text" ng-model="subjectName">
<div>
  <div ng-repeat="emp in empoyee.subjects | filter: subjectName">
    {{ emp.name + ', marks:' + emp.marks }}
  </div>
</div>
///The Angular Filter

Enter Filter key: 
<input type="text" ng-model="subjectName">
<div>
  <div ng-repeat="emp in empoyee.subjects | filter: subjectName">
    {{ emp.name + ', marks:' + emp.marks }}
  </div>
</div>

The live example code as given below.
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
//All-in-one code sample
<html>
<head>
  <title>AngularJS Filters</title>
  <script>
    var app = angular.module('myApp', []);
    app.controller('studentController', function($scope) {
      $scope.employee = {
        firstName: "Anil",
        lastName: "Singh",
        fees: 500000,
         
        subjects: [{
          name: 'Computer Science',
          marks: 92
        }, {
          name: 'Science',
          marks: 85
        }, {
          name: 'Maths',
          marks: 95
        }],
         
        fullName: function() {
          var studentObject = $scope.employee;
          return studentObject.firstName + " " + studentObject.lastName;
        }
      };
    });
  </script>
</head>
<body ng-app="myApp" ng-controller="studentController">
  <h2>AngularJS filter example</h2>
  <div>
    <table border="0">
      <tr>
        <td>
          First Name:
          <input type="text" ng-model="employee.firstName">
        </td>
      </tr>
      <tr>
        <td>
          Last Name:
          <input type="text" ng-model="employee.lastName">
        </td>
      </tr>
      <tr>
        <td>
          Fees:
          <input type="text" ng-model="employee.fees">
        </td>
      </tr>
      <tr>
        <td>
          Filter Key:
          <input type="text" ng-model="subjectName">
        </td>
      </tr>
    </table>
    <br/>
    <table border="1">
      <tr>
        <td>Display Upper Case:</td>
        <td>{{employee.fullName() | uppercase}}</td>
      </tr>
      <tr>
        <td>Display Lower Case:</td>
        <td>{{employee.fullName() | lowercase}}</td>
      </tr>
      <tr>
        <td>Fees:</td>
        <td>{{employee.fees | currency}}</td>
      </tr>
      <tr>
        <td>Subject:</td>
        <td>
          <ul>
            <li ng-repeat="emp in employee.subjects | filter: subjectName | orderBy:'marks'">
              {{ emp.name + ', Marks:' + emp.marks }}
            </li>
          </ul>
        </td>
      </tr>
    </table>
  </div>
</body>
</html>
//All-in-one code sample
<html>
<head>
  <title>AngularJS Filters</title>
  <script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.2.15/angular.min.js"></script>
  <script>
    var app = angular.module('myApp', []);
    app.controller('studentController', function($scope) {

      $scope.employee = {
        firstName: "Anil",
        lastName: "Singh",
        fees: 500000,
        
        subjects: [{
          name: 'Computer Science',
          marks: 92
        }, {
          name: 'Science',
          marks: 85
        }, {
          name: 'Maths',
          marks: 95
        }],
        
        fullName: function() {
          var studentObject = $scope.employee;
          return studentObject.firstName + " " + studentObject.lastName;
        }
      };
    });
  </script>
</head>

<body ng-app="myApp" ng-controller="studentController">
  <h2>AngularJS filter example</h2>
  <div>
    <table border="0">
      <tr>
        <td>
          First Name:
          <input type="text" ng-model="employee.firstName">
        </td>
      </tr>
      <tr>
        <td>
          Last Name:
          <input type="text" ng-model="employee.lastName">
        </td>
      </tr>
      <tr>
        <td>
          Fees:
          <input type="text" ng-model="employee.fees">
        </td>
      </tr>
      <tr>
        <td>
          Filter Key:
          <input type="text" ng-model="subjectName">
        </td>
      </tr>
    </table>
    <br/>
    <table border="1">
      <tr>
        <td>Display Upper Case:</td>
        <td>{{employee.fullName() | uppercase}}</td>
      </tr>
      <tr>
        <td>Display Lower Case:</td>
        <td>{{employee.fullName() | lowercase}}</td>
      </tr>
      <tr>
        <td>Fees:</td>
        <td>{{employee.fees | currency}}</td>
      </tr>
      <tr>
        <td>Subject:</td>
        <td>
          <ul>
            <li ng-repeat="emp in employee.subjects | filter: subjectName | orderBy:'marks'">
              {{ emp.name + ', Marks:' + emp.marks }}
            </li>
          </ul>
        </td>
      </tr>
    </table>
  </div>
</body>

</html>

By Anil Singh | Rating of this article (*****)

Popular posts from this blog

nullinjectorerror no provider for httpclient angular 17

In Angular 17 where the standalone true option is set by default, the app.config.ts file is generated in src/app/ and provideHttpClient(). We can be added to the list of providers in app.config.ts Step 1:   To provide HttpClient in a standalone app we could do this in the app.config.ts file, app.config.ts: import { ApplicationConfig } from '@angular/core'; import { provideRouter } from '@angular/router'; import { routes } from './app.routes'; import { provideClientHydration } from '@angular/platform-browser'; //This (provideHttpClient) will help us to resolve the issue  import {provideHttpClient} from '@angular/common/http'; export const appConfig: ApplicationConfig = {   providers: [ provideRouter(routes),  provideClientHydration(), provideHttpClient ()      ] }; The appConfig const is used in the main.ts file, see the code, main.ts : import { bootstrapApplication } from '@angular/platform-browser'; import { appConfig } from ...

List of Countries, Nationalities and their Code In Excel File

Download JSON file for this List - Click on JSON file    Countries List, Nationalities and Code Excel ID Country Country Code Nationality Person 1 UNITED KINGDOM GB British a Briton 2 ARGENTINA AR Argentinian an Argentinian 3 AUSTRALIA AU Australian an Australian 4 BAHAMAS BS Bahamian a Bahamian 5 BELGIUM BE Belgian a Belgian 6 BRAZIL BR Brazilian a Brazilian 7 CANADA CA Canadian a Canadian 8 CHINA CN Chinese a Chinese 9 COLOMBIA CO Colombian a Colombian 10 CUBA CU Cuban a Cuban 11 DOMINICAN REPUBLIC DO Dominican a Dominican 12 ECUADOR EC Ecuadorean an Ecuadorean 13 EL SALVA...

How To convert JSON Object to String?

To convert JSON Object to String - To convert JSON Object to String in JavaScript using “JSON.stringify()”. Example – let myObject =[ 'A' , 'B' , 'C' , 'D' ] JSON . stringify ( myObject ); ü   Stayed Informed –   Object Oriented JavaScript Interview Questions I hope you are enjoying with this post! Please share with you friends!! Thank you!!!

Encryption and Decryption Data/Password in Angular

You can use crypto.js to encrypt data. We have used 'crypto-js'.   Follow the below steps, Steps 1 –  Install CryptoJS using below NPM commands in your project directory npm install crypto-js --save npm install @types/crypto-js –save After installing both above commands it looks like  – NPM Command  1 ->   npm install crypto-js --save NPM Command  2 ->   npm install @types/crypto-js --save Steps 2  - Add the script path in “ angular.json ” file. "scripts" : [                "../node_modules/crypto-js/crypto-js.js"               ] Steps 3 –  Create a service class “ EncrDecrService ” for  encrypts and decrypts get/set methods . Import “ CryptoJS ” in the service for using  encrypt and decrypt get/set methods . import  {  Injectable  }  from ...

Angular Testing Questions and Answers | 9, 8, 7, 6

What Is Testing? The testing is a tools and techniques for a unit and integration testing Angular applications . Why Test? Tests are the best ways to prevent software bugs and defects. How to Setup Test in Angular Project? Angular CLI install everything you need to test an Angular application. This CLI command takes care of Jasmine and karma configuration for you. Run this CLI command- ng test The test file extension must be “.spec.ts” so that tooling can identify the test file. You can also unit test your app using other testing libraries and test runners. Types of Test – The all great developer knows his/her testing tools use. Understanding your tools for testing is essential before diving into writing tests. The Testing depends on your project requirements and the project cost. The types of Testing looks like - 1.       Unit Test 2.       Integration Test 3.       En...