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Filter usage in AngularJS

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Filter usage in AngularJS

This article describes how to use filters in AngularJS. filters are a very useful function for processing text in AngularJS. For more information, see

Filters are used to modify data and can be classified into expressions or using pipeline instructions. The following is a list of commonly used filters.

Lower case Filter

Add a lower-case Filter Using the MPs queue expression. Add a lower-case filter to print the Student name with lower-case letters.

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Enter first name: <input type = "text" ng-model = "student. firstName">

Enter last name: <input type = "text" ng-model = "student. lastName">

Name in Upper Case: {student. fullName () | lowercase }}

Currency Filter

The expression of the number returned by the coin Filter Using the MPs queue. Here, we have added a filter for printing the cost of currency format.

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Enter fees: <input type = "text" ng-model = "student. fees">

Fees: {student. fees | currency }}

Filter

To display only the required topics, we use subjectName as the filter.

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Enter subject: <input type = "text" ng-model = "subjectName">

Subject:

<Ul>

<Li ng-repeat = "subject in student. subjects | filter: subjectName">

{Subject. name + ', marks:' + subject. marks }}

</Li>

</Ul>

Sort Filter

To sort topics by TAG, we use orderBy tag.

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Subject:

<Ul>

<Li ng-repeat = "subject in student. subjects | orderBy: 'mark'">

{Subject. name + ', marks:' + subject. marks }}

</Li>

</Ul>

Example

The following example shows all the above filters.

TestAngularJS.html

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<Html>

<Head>

<Title> Angular JS Filters </title>

</Head>

<Body>

<H2> AngularJS Sample Application

<Div ng-app = "" ng-controller = "studentController">

<Table border = "0">

<Tr> <td> Enter first name: </td> <input type = "text" ng-model = "student. firstName "> </td> </tr>

<Tr> <td> Enter last name: </td> <input type = "text" ng-model = "student. lastName "> </td> </tr>

<Tr> <td> Enter fees: </td> <input type = "text" ng-model = "student. fees "> </td> </tr>

<Tr> <td> Enter subject: </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: 'mark'">

{Subject. name + ', marks:' + subject. marks }}

</Li>

</Ul>

</Td> </tr>

</Table>

</Div>

<Script>

Function studentController ($ 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>

<Script src = "http://ajax.googleapis.com/ajax/libs/angularjs/1.2.15/angular.min.js"> </script>

</Body>

</Html>

Output

Open textangularjs.html in the webbrowser and see the following results:

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