1.1.1 Templates<\/h4>\n
In angular, a template<\/span> is an Directives<\/span> are the markers (i.e. attributes) on a DOM element that tell angular to attach a specific behavior to that DOM element or even transform the DOM element and its children. Most of the directives in the angular library start with the prefix An expression<\/span> is like a JavaScript code usually wrapped inside the double curly braces such as In an angular library, filters allow transforming the data to be displayed on the UI without changing the original format. Angular filters are implemented in the angular directives and expressions using the pipe Angular filter basic syntax<\/em><\/span><\/p>\n These new APIs make developer’s life easier, really! But it would be difficult for a beginner to understand this without an example. Therefore, let us create a simple application using the currency filter<\/span> in the angular applications.<\/p>\n Here is a step-by-step guide for implementing the currency filter in the angular applications.<\/p>\n We are using Eclipse Kepler SR2, JDK 8 and Maven. Having said that, we have tested the code against JDK 1.7 and it works well.<\/p>\n Firstly, let\u2019s review the final project structure if you are confused about where you should create the corresponding files or folder later!<\/p>\n This section will show how to create a Java-based Maven project with Eclipse. In Eclipse Ide, go to In the New Maven Project window, it will ask you to select project location. By default, ‘Use default workspace location’ will be selected. Just click on next button to proceed.<\/p>\n Select the ‘Maven Web App’ Archetype from the list of options and click next.<\/p>\n It will ask you to ‘Enter the group and the artifact id for the project’. We will enter the details as shown in the below image. The version number will be by default: Click on Finish and the creation of a maven project is completed. If you see, it has downloaded the maven dependencies and a pom.xml<\/em><\/span><\/p>\n Let\u2019s start building the application!<\/p>\n Let\u2019s create an application to understand the basic building blocks of this tutorial.<\/p>\n Since it is a pure JavaScript framework, we should add its reference using the Next, we will define the AngularJS application using the index.jsp<\/em><\/span><\/p>\n In angular, filters<\/strong> are the powerful components that help to modify the data. The currency<\/strong> filter converts a number into a specified currency format and symbol. By default, angular library shows Syntax<\/em><\/span><\/p>\n Do note,<\/p>\n In this step, we\u2019ll define the currency<\/em> filter to show its usage in the angular applications.<\/p>\n index.jsp<\/em><\/span><\/p>\n Complete the above steps and I will show you how to use the ‘currency<\/em>‘ angular filter with real-life practices. Let\u2019s see the code snippet.<\/p>\n index.jsp<\/em><\/span><\/p>\n As we are ready for all the changes, let us compile the project and deploy the application on the Tomcat7 server. To deploy the application on Tomat7, right-click on the project and navigate to Tomcat will deploy the application in its web-apps folder and shall start its execution to deploy the project so that we can go ahead and test it in the browser.<\/p>\n Open your favorite browser and hit the following URL. The output page using the currency filter<\/span> will be displayed.<\/p>\n Server name (localhost) and port (8080) may vary as per your Tomcat configuration.<\/p>\n That\u2019s all for this post. Happy Learning!!<\/p>\n In this section, developers learned how to create a simple application using the currency angular filter. Developers can download the sample application as an Eclipse project in the Downloads<\/a> section.<\/p>\n This was an example of the Currency<\/em> angular filter in the AngularJS framework.<\/p>\nHTML<\/code> with added markups. AngularJS library compiles the templates and renders the resultant HTML<\/code> page.
\n[ulp id=’LXJcMJZXSsqGXYW8′]<\/p>\n1.1.2 Directives<\/h4>\n
ng<\/code>. Below is the list of important directives that are available in the angular library.<\/p>\n\n
ng-app<\/code>: The ng-app<\/code> directive is a starting point<\/em>. If the AngularJS framework finds the ng-app<\/code> directive anywhere in the HTML<\/code> document, it bootstraps (i.e. initializes) itself and compiles the HTML<\/code> template<\/li>\nng-model<\/code>: The ng-model<\/code> directive binds an HTML<\/code> element to a property on the $scope<\/code> object. It also binds the values of AngularJS application data to the HTML<\/code> input controls.<\/li>\nng-bind<\/code>: The ng-bind<\/code> directive binds the AngularJS application data to the HTML<\/code> tags<\/li>\nng-controller<\/code>: The ng-controller<\/code> directive specifies a controller in the HTML<\/code> element. This controller will add behavior or maintain the data in that HTML<\/code> element and its child elements<\/li>\nng-repeat<\/code>: The ng-repeat<\/code> directive repeat a set of HTML<\/code> elements for each item in a given collection<\/li>\n<\/ul>\n1.1.3 Expressions<\/h4>\n
{{ expression }}<\/code>. AngularJS library evaluates the expression and produces a result.<\/p>\n1.2 What are Angular filters?<\/h3>\n
|<\/code> character. Following is the basic syntax using the angular filter in an angular application.<\/p>\n{{ expression | filterName:parameter }}\r\n<\/pre>\n2. AngularJS Currency Filter Example<\/h2>\n
2.1 Tools Used<\/h3>\n
2.2 Project Structure<\/h3>\n
![\"AngularJS](\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/05\/angular_currency_ex_project_structure_guide_1.jpg\")
<\/a>2.3 Project Creation<\/h3>\n
File -> New -> Maven Project<\/code>.<\/p>\n<\/a><\/a><\/a>0.0.1-SNAPSHOT<\/code>.<\/p>\n<\/a>pom.xml<\/code> file will be created. It will have the following code:<\/p>\n<project xmlns=\"http:\/\/maven.apache.org\/POM\/4.0.0\" xmlns:xsi=\"http:\/\/www.w3.org\/2001\/XMLSchema-instance\" xsi:schemaLocation=\"http:\/\/maven.apache.org\/POM\/4.0.0 http:\/\/maven.apache.org\/xsd\/maven-4.0.0.xsd\">\r\n\t<modelVersion>4.0.0<\/modelVersion>\r\n\t<groupId>AngularCurrency<\/groupId>\r\n\t<artifactId>AngularCurrency<\/artifactId>\r\n\t<version>0.0.1-SNAPSHOT<\/version>\r\n\t<packaging>war<\/packaging>\r\n<\/project>\r\n<\/pre>\n
3. Application Building<\/h2>\n
3.1 Load the AngularJS framework<\/h3>\n
<script><\/code> tag.<\/p>\n<script type=\"text\/javascript\" src=\"resource\/js\/angular_v1.6.0.js\"><\/script>\r\n<\/pre>\n
3.2 Define the AngularJS application<\/h3>\n
<ng-app><\/code> and <ng-controller><\/code> directives.<\/p>\n<div ng-app=\"myApp\" ng-controller=\"myCtrl\">\r\n ...\r\n<\/div>\r\n<\/pre>\n
3.3 Define Filters<\/h3>\n
$<\/code> as a currency symbol, but this can be changed according to the application need. Following is the syntax of using the currency<\/em> filter in angular applications.<\/p>\n{{ currency_expression | currency : 'currency_symbol' : 'fraction' }}\r\n<\/pre>\n\n
currency_symbol<\/code> and fraction<\/code> are two optional limits where\n\n
currency_symbol<\/code>decides the symbol of the currency<\/li>\nfraction<\/code> decides the number of decimal points<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<!------ AngularJs Currency Example ------>\r\n<div ng-app=\"myApp\" ng-controller=\"myCtrl\">\r\n\t<h3 id=\"header_msg\" class=\"text-warning\">A demo of <em>currency<\/em> filter in Angular JavaScript!<\/h3>\r\n\t<div>\u00a0<\/div>\r\n\t\r\n\t<div id=\"input_price\" class=\"form-group row\">\r\n\t\t\t<label for=\"number\" class=\"col-sm-2 col-form-label\">Price<\/label>\r\n\t\t\t<div class=\"col-10 margin_left_40\">\r\n\t\t\t\t<input id=\"number\" type=\"text\" class=\"form-control\" ng-model=\"amount\" placeholder=\"Enter sample amount\" \/>\r\n\t\t\t<\/div>\r\n\t<\/div>\r\n\t<div>\u00a0<\/div>\r\n\t\r\n\t<!-- Dollar currency filter -->\r\n\t<ul class=\"default_currency\">\r\n\t\t<li>Default currency filter, if we have not given any currency format by default it will consider it as '$' i.e. <span>{{ amount | currency }}<\/span> <\/li> \r\n\t<\/ul>\r\n\t\r\n\t<!-- Indian rupee currency filter -->\r\n\t<ul class=\"country_specific_currency_with_no_fractions\">\r\n\t\t<li>For indian rupees with no fractions i.e. <span>{{ amount | currency : \"\u0930\" : no_fraction }}<\/span> <\/li> \r\n\t<\/ul>\r\n\t\r\n\t<!-- Euro currency filter with fractions -->\t\t\t\t\t\t\t \r\n\t<ul class=\"country_specific_currency_with_fractions\">\r\n\t\t<li>For euro with fractions i.e. <span>{{ amount | currency : \"\u20ac\" : price_fraction }}<\/span> <\/li> \r\n\t<\/ul>\t \t\t\t\t\t\t\t\t \r\n<\/div>\r\n<\/pre>\n3.4 Complete Application<\/h3>\n
<!DOCTYPE html>\r\n<html>\r\n\t<head>\r\n\t <meta http-equiv=\"Content-Type\" content=\"text\/html; charset=UTF-8\">\r\n\t <title>AngularJS Currency<\/title>\r\n\t\r\n\t <!-- AngularJs File -->\r\n\t <script type=\"text\/javascript\" src=\"resource\/js\/angular_v1.6.0.js\"><\/script>\r\n\t <script type=\"text\/javascript\" src=\"resource\/js\/index.js\"><\/script>\r\n\t\r\n\t <!-- Bootstrap Css -->\r\n\t <link rel=\"stylesheet\" href=\"https:\/\/maxcdn.bootstrapcdn.com\/bootstrap\/4.0.0\/css\/bootstrap.min.css\">\r\n\t <style type=\"text\/css\">\r\n\t \t.margin_left_40 {\r\n\t \t\tmargin-left: -140px !important;\r\n\t \t}\r\n\t <\/style>\r\n\t<\/head>\r\n\t<body>\r\n\t <div id=\"angularCurrency\" class=\"container\">\r\n\t <h1 align=\"center\" class=\"text-primary\">AngularJS - Currency Example<\/h1>\r\n\t <hr \/>\r\n\t\r\n\t <!------ AngularJs Currency Example ------>\r\n\t <div ng-app=\"myApp\" ng-controller=\"myCtrl\">\r\n\t <h3 id=\"header_msg\" class=\"text-warning\">A demo of <em>currency<\/em> filter in Angular JavaScript!<\/h3>\r\n\t <div>\u00a0<\/div>\r\n\t \r\n\t <div id=\"input_price\" class=\"form-group row\">\r\n\t \t\t<label for=\"number\" class=\"col-sm-2 col-form-label\">Price<\/label>\r\n\t \t\t<div class=\"col-10 margin_left_40\">\r\n\t \t\t\t<input id=\"number\" type=\"text\" class=\"form-control\" ng-model=\"amount\" placeholder=\"Enter sample amount\" \/>\r\n\t \t\t<\/div>\r\n\t <\/div>\r\n\t <div>\u00a0<\/div>\r\n\t \r\n\t <!-- Dollar currency filter -->\r\n\t <ul class=\"default_currency\">\r\n \t\t<li>Default currency filter, if we have not given any currency format by default it will consider it as '$' i.e. <span>{{ amount | currency }}<\/span> <\/li> \r\n \t\t<\/ul>\r\n\t \r\n\t <!-- Indian rupee currency filter -->\r\n\t <ul class=\"country_specific_currency_with_no_fractions\">\r\n \t\t<li>For indian rupees with no fractions i.e. <span>{{ amount | currency : \"\u0930\" : no_fraction }}<\/span> <\/li> \r\n \t\t<\/ul>\r\n\t \t\r\n\t \t<!-- Euro currency filter with fractions --> \r\n\t <ul class=\"country_specific_currency_with_fractions\">\r\n \t\t<li>For euro with fractions i.e. <span>{{ amount | currency : \"\u20ac\" : price_fraction }}<\/span> <\/li> \r\n \t\t<\/ul>\t \t\t\t\t\t\t\t\t \r\n\t <\/div>\r\n\t <\/div>\r\n\t<\/body>\r\n<\/html>\r\n<\/pre>\n4. Run the Application<\/h2>\n
Run as -> Run on Server<\/code>.<\/p>\n<\/a>5. Project Demo<\/h2>\n
http:\/\/localhost:8080\/AngularCurrency\/<\/pre>\n
<\/a>6. Conclusion<\/h2>\n
<\/a>7. Download the Eclipse Project<\/h2>\n