{"id":20794,"date":"2018-02-07T16:15:44","date_gmt":"2018-02-07T14:15:44","guid":{"rendered":"http:\/\/www.webcodegeeks.com\/?p=20794"},"modified":"2018-02-07T16:07:50","modified_gmt":"2018-02-07T14:07:50","slug":"angularjs-filters-example","status":"publish","type":"post","link":"https:\/\/www.webcodegeeks.com\/javascript\/angular-js\/angularjs-filters-example\/","title":{"rendered":"AngularJS Filters Example"},"content":{"rendered":"<p>Hello readers, in this basic example, developers will learn what <em>AngularJS<\/em> is and how to use the <strong>angular filters<\/strong> in the angular applications.<\/p>\n<h2>1. Introduction<\/h2>\n<h3>1.1 What is AngularJS?<\/h3>\n<p><em>AngularJS<\/em> is a JavaScript MVC or Model-View-Controller framework developed by Google that lets developers build well structured, easily testable, and maintainable front-end applications. Before we start with the creation of a real application using the angular framework, let us see the important parts of an angular application.<br \/>\n[ulp id=&#8217;LXJcMJZXSsqGXYW8&#8242;]<\/p>\n<h4>1.1.1 Templates<\/h4>\n<p>In angular, a <span style=\"text-decoration: underline;\">template<\/span> is an <code>HTML<\/code> with added markups. AngularJS library compiles the templates and renders the resultant <code>HTML<\/code> page.<\/p>\n<h4>1.1.2 Directives<\/h4>\n<p><span style=\"text-decoration: underline;\">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 <code>ng<\/code>. Below is the list of important directives that are available in the angular library.<\/p>\n<ul>\n<li><code>ng-app<\/code>: The <code>ng-app<\/code> directive is a <em>starting point<\/em>. If the AngularJS framework finds the <code>ng-app<\/code> directive anywhere in the <code>HTML<\/code> document, it bootstraps (i.e. initializes) itself and compiles the <code>HTML<\/code> template<\/li>\n<li><code>ng-model<\/code>: The <code>ng-model<\/code> directive binds an <code>HTML<\/code> element to a property on the <code>$scope<\/code> object. It also binds the values of AngularJS application data to the <code>HTML<\/code> input controls.<\/li>\n<li><code>ng-bind<\/code>: The <code>ng-bind<\/code> directive binds the AngularJS application data to the <code>HTML<\/code> tags<\/li>\n<li><code>ng-controller<\/code>: The <code>ng-controller<\/code> directive specifies a controller in the <code>HTML<\/code> element. This controller will add behavior or maintain the data in that <code>HTML<\/code> element and its child elements<\/li>\n<li><code>ng-repeat<\/code>: The <code>ng-repeat<\/code> directive repeat a set of <code>HTML<\/code> elements for each item in a given collection<\/li>\n<\/ul>\n<h4>1.1.3 Expressions<\/h4>\n<p>An <span style=\"text-decoration: underline;\">expression<\/span> is like a JavaScript code usually wrapped inside the double curly braces such as <code>{{ expression }}<\/code>. AngularJS library evaluates the expression and produces a result.<\/p>\n<h3>1.2 What are Angular filters?<\/h3>\n<p>In an angular library, filters allow transforming the data to be displayed on the UI without changing the original format. Angular filters are implemented in the angular directives and expressions using the pipe <code>|<\/code> character. Following is the basic syntax using the angular filter in an angular application.<\/p>\n<p><span style=\"text-decoration: underline;\"><em>Angular filter basic syntax<\/em><\/span><\/p>\n<pre class=\"brush:html; wrap-lines:false;\">{{ expression | filterName:parameter }}\r\n<\/pre>\n<p>The angular library provides various filters to change the data and the below list shows the important filters.<\/p>\n<h4>1.2.1 Currency Filter<\/h4>\n<p>This filter converts a number into a specified currency format and symbol. By default, angular library shows <code>$<\/code> as a currency symbol, but this can be changed according to the application need. Following is the syntax of using the <em>currency<\/em> filter in angular applications.<\/p>\n<p><span style=\"text-decoration: underline;\"><em>Syntax<\/em><\/span><\/p>\n<pre class=\"brush:html; wrap-lines:false;\">{{ currency_expression | currency : 'currency_symbol' : 'fraction' }}\r\n<\/pre>\n<p>Do note, <code>currency_symbol<\/code> and <code>fraction<\/code> are two optional limits where <code>currency_symbol<\/code> decides the <em>symbol<\/em> of the currency and <code>fraction<\/code> decides the <em>number of decimal points<\/em>.<\/p>\n<h4>1.2.2 Uppercase Filter<\/h4>\n<p>This filter converts the string to the uppercase format. Following is the syntax of using the <em>uppercase<\/em> filter in angular applications.<\/p>\n<p><span style=\"text-decoration: underline;\"><em>Syntax<\/em><\/span><\/p>\n<pre class=\"brush:html; wrap-lines:false;\">{{ data_string | uppercase }}\r\n<\/pre>\n<h4>1.2.3 Lowercase Filter<\/h4>\n<p>This filter converts the uppercase string to the lowercase format. Following is the syntax of using the <em>lowercase<\/em> filter in angular applications.<\/p>\n<p><span style=\"text-decoration: underline;\"><em>Syntax<\/em><\/span><\/p>\n<pre class=\"brush:html; wrap-lines:false;\">{{ data_string | lowercase }}\r\n<\/pre>\n<h4>1.2.4 Filter<\/h4>\n<p>This filter selects items from an array based on the specified criteria and returns the matching output in the form of an array. Following is the syntax of using the <em>filter<\/em> in angular applications.<\/p>\n<p><span style=\"text-decoration: underline;\"><em>Syntax<\/em><\/span><\/p>\n<pre class=\"brush:html; wrap-lines:false;\">{{ filter_expression | filter : filter_criteria }}\r\n<\/pre>\n<h4>1.2.5 Order-by Filter<\/h4>\n<p>This filter sorts an array according to the specified condition, e.g. ascending or descending. Following is the syntax of using the <em>orderBy<\/em> filter in angular applications.<\/p>\n<p><span style=\"text-decoration: underline;\"><em>Syntax<\/em><\/span><\/p>\n<pre class=\"brush:html; wrap-lines:false;\">{{ orderBy_expression | orderBy : predicate_expression : reverse }}\r\n<\/pre>\n<h4>1.2.6 Limit-to Filter<\/h4>\n<p>This filter is used to create an array of specified elements or a string containing a specific number of elements. The number or character are taken from the beginning or the end of the element. Following is the syntax of using the <em>limitTo<\/em> filter in angular applications.<\/p>\n<p><span style=\"text-decoration: underline;\"><em>Syntax<\/em><\/span><\/p>\n<pre class=\"brush:html; wrap-lines:false;\">{{ data_tolimit | limitTo : limit : begin }}\r\n<\/pre>\n<h4>1.2.7 Date Filter<\/h4>\n<p>This filter formats the date into a string based on the given format. Following is the syntax of using the <em>date<\/em> filter in angular applications.<\/p>\n<p><span style=\"text-decoration: underline;\"><em>Syntax<\/em><\/span><\/p>\n<pre class=\"brush:html; wrap-lines:false;\">{{ date_expression | date : format : timezone }}\r\n<\/pre>\n<p>These new APIs make developer&#8217;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 important angular filters.<\/p>\n<h2>2. AngularJS Filters Example<\/h2>\n<p>Here is a step-by-step guide for implementing the filters in angular applications.<\/p>\n<h3>2.1 Tools Used<\/h3>\n<p>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<h3>2.2 Project Structure<\/h3>\n<p>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<figure id=\"attachment_20795\" aria-describedby=\"caption-attachment-20795\" style=\"width: 281px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_structure_guide_1.jpg\"><img decoding=\"async\" class=\"size-full wp-image-20795\" src=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_structure_guide_1.jpg\" alt=\"Fig. 1: Application Project Structure\" width=\"281\" height=\"503\" srcset=\"https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_structure_guide_1.jpg 281w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_structure_guide_1-168x300.jpg 168w\" sizes=\"(max-width: 281px) 100vw, 281px\" \/><\/a><figcaption id=\"caption-attachment-20795\" class=\"wp-caption-text\">Fig. 1: Application Project Structure<\/figcaption><\/figure>\n<h3>2.3 Project Creation<\/h3>\n<p>This section will show how to create a Java-based Maven project with Eclipse. In Eclipse Ide, go to <code>File -&gt; New -&gt; Maven Project<\/code>.<\/p>\n<figure id=\"attachment_20796\" aria-describedby=\"caption-attachment-20796\" style=\"width: 657px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_guide_1.jpg\"><img decoding=\"async\" class=\"size-full wp-image-20796\" src=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_guide_1.jpg\" alt=\"Fig. 2: Create Maven Project\" width=\"657\" height=\"690\" srcset=\"https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_guide_1.jpg 657w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_guide_1-286x300.jpg 286w\" sizes=\"(max-width: 657px) 100vw, 657px\" \/><\/a><figcaption id=\"caption-attachment-20796\" class=\"wp-caption-text\">Fig. 2: Create Maven Project<\/figcaption><\/figure>\n<p>In the New Maven Project window, it will ask you to select project location. By default, &#8216;Use default workspace location&#8217; will be selected. Just click on next button to proceed.<\/p>\n<figure id=\"attachment_20797\" aria-describedby=\"caption-attachment-20797\" style=\"width: 598px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_guide_2.jpg\"><img decoding=\"async\" class=\"size-full wp-image-20797\" src=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_guide_2.jpg\" alt=\"Fig. 3: Project Details\" width=\"598\" height=\"543\" srcset=\"https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_guide_2.jpg 598w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_guide_2-300x272.jpg 300w\" sizes=\"(max-width: 598px) 100vw, 598px\" \/><\/a><figcaption id=\"caption-attachment-20797\" class=\"wp-caption-text\">Fig. 3: Project Details<\/figcaption><\/figure>\n<p>Select the &#8216;Maven Web App&#8217; Archetype from the list of options and click next.<\/p>\n<figure id=\"attachment_20798\" aria-describedby=\"caption-attachment-20798\" style=\"width: 597px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_guide_3.jpg\"><img decoding=\"async\" class=\"size-full wp-image-20798\" src=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_guide_3.jpg\" alt=\"Fig. 4: Archetype Selection\" width=\"597\" height=\"541\" srcset=\"https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_guide_3.jpg 597w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_guide_3-300x272.jpg 300w\" sizes=\"(max-width: 597px) 100vw, 597px\" \/><\/a><figcaption id=\"caption-attachment-20798\" class=\"wp-caption-text\">Fig. 4: Archetype Selection<\/figcaption><\/figure>\n<p>It will ask you to &#8216;Enter the group and the artifact id for the project&#8217;. We will enter the details as shown in the below image. The version number will be by default: <code>0.0.1-SNAPSHOT<\/code>.<\/p>\n<figure id=\"attachment_20799\" aria-describedby=\"caption-attachment-20799\" style=\"width: 529px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_guide_4.jpg\"><img decoding=\"async\" class=\"size-full wp-image-20799\" src=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_guide_4.jpg\" alt=\"Fig. 5: Archetype Parameters\" width=\"529\" height=\"541\" srcset=\"https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_guide_4.jpg 529w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_guide_4-293x300.jpg 293w\" sizes=\"(max-width: 529px) 100vw, 529px\" \/><\/a><figcaption id=\"caption-attachment-20799\" class=\"wp-caption-text\">Fig. 5: Archetype Parameters<\/figcaption><\/figure>\n<p>Click on Finish and the creation of a maven project is completed. If you see, it has downloaded the maven dependencies and a <code>pom.xml<\/code> file will be created. It will have the following code:<\/p>\n<p><span style=\"text-decoration: underline;\"><em>pom.xml<\/em><\/span><\/p>\n<pre class=\"brush:xml; wrap-lines:false;\">&lt;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\"&gt;\r\n\t&lt;modelVersion&gt;4.0.0&lt;\/modelVersion&gt;\r\n\t&lt;groupId&gt;AngularJsFilters&lt;\/groupId&gt;\r\n\t&lt;artifactId&gt;AngularJsFilters&lt;\/artifactId&gt;\r\n\t&lt;version&gt;0.0.1-SNAPSHOT&lt;\/version&gt;\r\n\t&lt;packaging&gt;war&lt;\/packaging&gt;\r\n&lt;\/project&gt;\r\n<\/pre>\n<p>Let\u2019s start building the application!<\/p>\n<h2>3. Application Building<\/h2>\n<p>Let\u2019s create an application to understand the basic building blocks of the angular filters.<\/p>\n<h3>3.1 Load the AngularJS framework<\/h3>\n<p>Since it is a pure JavaScript framework, we should add its reference using the <code>&lt;script&gt;<\/code> tag.<\/p>\n<pre class=\"brush:js; wrap-lines:false;\">&lt;script type=\"text\/javascript\" src=\"resource\/js\/angular_v1.6.0.js\"&gt;&lt;\/script&gt;\r\n<\/pre>\n<h3>3.2 Define the AngularJS application<\/h3>\n<p>Next, we will define the AngularJS application using the <code>&lt;ng-app&gt;<\/code> directive.<\/p>\n<p><span style=\"text-decoration: underline;\"><em>index.jsp<\/em><\/span><\/p>\n<pre class=\"brush:html; wrap-lines:false;\">&lt;div ng-app = \"myApp\"&gt;\r\n ...\r\n&lt;\/div&gt;\r\n<\/pre>\n<h3>3.3 Define Filters<\/h3>\n<p>In angular, <strong>filters<\/strong> are the powerful components that help to modify the data. In this step, we\u2019ll define the <em>angular filters<\/em> to show their usage in the angular applications.<\/p>\n<p><span style=\"text-decoration: underline;\"><em>index.jsp<\/em><\/span><\/p>\n<pre class=\"brush:html; wrap-lines:false;\">&lt;!----- EXAMPLE #1 - ANGULAR CODE FOR CURRENCY FILTER -----&gt;\r\n&lt;div id=\"currencyFilter\" class=\"non default\"&gt;\r\n &lt;div class=\"login\"&gt;\r\n\t&lt;h3 align=\"center\" class=\"text-primary\"&gt;Currency Filter&lt;\/h3&gt;\r\n\t&lt;hr\/&gt;\r\n\t&lt;p class=\"text-info\"&gt;&lt;strong&gt;Enter price&lt;\/strong&gt;&lt;\/p&gt;\r\n\t&lt;input type=\"text\" name=\"price\" id=\"entered_price\" ng-model=\"price\" placeholder=\"Enter price\" class=\"form-control\" \/&gt;\r\n\t&lt;div&gt;\u00a0&lt;\/div&gt;\r\n\t&lt;p class=\"text-success\"&gt;&lt;strong&gt;Output : &lt;\/strong&gt;{{ price|currency }}&lt;\/p&gt;\r\n &lt;\/div&gt;\r\n&lt;\/div&gt;\r\n\r\n&lt;!----- EXAMPLE #2 - ANGULAR CODE FOR UPPERCASE FILTER -----&gt;\r\n&lt;div id=\"uppercaseFilter\" class=\"non\" style=\"display: none\"&gt;\r\n &lt;div class=\"login\"&gt;\r\n\t&lt;h3 align=\"center\" class=\"text-primary\"&gt;Uppercase Filter&lt;\/h3&gt;\r\n\t&lt;hr\/&gt;\r\n\t&lt;p class=\"text-info\"&gt;&lt;strong&gt;Enter a string&lt;\/strong&gt;&lt;\/p&gt;\r\n\t&lt;input type=\"text\" name=\"uname\" id=\"uppercase_name\" ng-model=\"uname\" placeholder=\"Enter name in uppercase\" class=\"form-control\" \/&gt;\r\n\t&lt;div&gt;\u00a0&lt;\/div&gt;\r\n\t&lt;p class=\"text-success\"&gt;&lt;strong&gt;Output : &lt;\/strong&gt;{{ uname|uppercase }}&lt;\/p&gt;\r\n &lt;\/div&gt;\r\n&lt;\/div&gt;\r\n\r\n&lt;!----- EXAMPLE #3 - ANGULAR CODE FOR LOWERCASE FILTER -----&gt;\r\n&lt;div id=\"lowcaseFilter\" class=\"non\" style=\"display: none\"&gt;\r\n &lt;div class=\"login\"&gt;\r\n\t&lt;h3 align=\"center\" class=\"text-primary\"&gt;Lowercase Filter&lt;\/h3&gt;\r\n\t&lt;hr\/&gt;\r\n\t&lt;p class=\"text-info\"&gt;&lt;strong&gt;Enter a string&lt;\/strong&gt;&lt;\/p&gt;\r\n\t&lt;input type=\"text\" name=\"lname\" id=\"lowercase_name\" ng-model=\"lname\" placeholder=\"Enter name in lowercase\" class=\"form-control\" \/&gt;\r\n\t&lt;div&gt;\u00a0&lt;\/div&gt;\r\n\t&lt;p class=\"text-success\"&gt;&lt;strong&gt;Output : &lt;\/strong&gt;{{ lname|lowercase }}&lt;\/p&gt;\r\n &lt;\/div&gt;\r\n&lt;\/div&gt;\r\n\r\n&lt;!----- EXAMPLE #4 - ANGULAR CODE FOR CUSTOM FILTER -----&gt;\r\n&lt;div ng-controller = \"fetchFriends\"&gt;\r\n &lt;div id=\"customfilter\" class=\"non\" style=\"display: none\"&gt;\r\n\t&lt;div class=\"login\"&gt;\r\n\t   &lt;h3 align=\"center\" class=\"text-primary\"&gt;Filter&lt;\/h3&gt;\r\n\t   &lt;hr\/&gt;\r\n\t   &lt;p class=\"text-info\"&gt;&lt;strong&gt;Search by Name&lt;\/strong&gt;&lt;\/p&gt;\r\n\t   &lt;input type=\"text\" name=\"fname\" id=\"friend_name\" ng-model=\"fname\" placeholder=\"Enter a string\" class=\"form-control\" \/&gt;\r\n\t   &lt;!----- FILTER RECORDS BY NAME -----&gt;\r\n\t   &lt;div&gt;\u00a0&lt;\/div&gt;\r\n\t   &lt;ul class=\"friend_info\"&gt;\r\n\t\t  &lt;li class=\"left info_heading\"&gt;Name&lt;\/li&gt;\r\n\t\t  &lt;li class=\"right info_heading\"&gt;Age&lt;\/li&gt;\r\n\t\t  &lt;li class=\"text-success\" ng-repeat=\"f in friends|filter:{name:fname}\" &gt;\r\n\t\t\t &lt;div id=\"fName\" class=\"left\"&gt;{{ f.name }}&lt;\/div&gt;\r\n\t\t\t &lt;div id=\"fAge\" class=\"right\"&gt;{{ f.age }}&lt;\/div&gt;\r\n\t\t  &lt;\/li&gt;\r\n\t   &lt;\/ul&gt;\r\n\t   &lt;div&gt;\u00a0&lt;\/div&gt;\r\n\t   &lt;p class=\"text-info\"&gt;&lt;strong&gt;Search by Age&lt;\/strong&gt;&lt;\/p&gt;\r\n\t   &lt;input type=\"text\" name=\"fage\" id=\"friend_age\" ng-model=\"fage\" placeholder=\"Enter a number\" class=\"form-control\" \/&gt;\r\n\t   &lt;!----- FILTER RECORDS BY AGE -----&gt;\r\n\t   &lt;div&gt;\u00a0&lt;\/div&gt;\r\n\t   &lt;ul class=\"friend_info\"&gt;\r\n\t\t  &lt;li class=\"left info_heading\"&gt;Name&lt;\/li&gt;\r\n\t\t  &lt;li class=\"right info_heading\"&gt;Age&lt;\/li&gt;\r\n\t\t  &lt;li class=\"text-success\" ng-repeat=\"f in friends|filter:{age:fage}\"&gt;\r\n\t\t\t &lt;div id=\"fName\" class=\"left\"&gt;{{ f.name }}&lt;\/div&gt;\r\n\t\t\t &lt;div id=\"fAge\" class=\"right\"&gt;{{ f.age }}&lt;\/div&gt;\r\n\t\t  &lt;\/li&gt;\r\n\t   &lt;\/ul&gt;\r\n\t&lt;\/div&gt;\r\n &lt;\/div&gt;\r\n \r\n &lt;!----- EXAMPLE #5 - ANGULAR CODE FOR ORDER-BY FILTER -----&gt;\r\n &lt;div id=\"orderFilter\" class=\"non\" style=\"display: none\"&gt;\r\n\t&lt;div class=\"login\"&gt;\r\n\t   &lt;h3 align=\"center\" class=\"text-primary\"&gt;orderBy Filter&lt;\/h3&gt;\r\n\t   &lt;hr\/&gt;\r\n\t   &lt;p class=\"text-info\"&gt;&lt;strong&gt;Select an option&lt;\/strong&gt;&lt;\/p&gt;\r\n\t   &lt;select ng-model=\"select\"&gt;\r\n\t\t  &lt;option value=\"\" disabled selected&gt;Select option&lt;\/option&gt;\r\n\t\t  &lt;option value=\"name\"&gt;Name&lt;\/option&gt;\r\n\t\t  &lt;option value=\"age\"&gt;Age&lt;\/option&gt;\r\n\t   &lt;\/select&gt;\r\n\t   &lt;ul class=\"friend_info\"&gt;\r\n\t\t  &lt;li class=\"left info_heading\"&gt;Name&lt;\/li&gt;\r\n\t\t  &lt;li class=\"right info_heading\"&gt;Age&lt;\/li&gt;\r\n\t\t  &lt;li class=\"text-success\" ng-repeat=\"f in friends|orderBy: select\"&gt;\r\n\t\t\t &lt;div id=\"fName\" class=\"left\"&gt;{{ f.name }}&lt;\/div&gt;\r\n\t\t\t &lt;div id=\"fAge\" class=\"right\"&gt;{{ f.age }}&lt;\/div&gt;\r\n\t\t  &lt;\/li&gt;\r\n\t   &lt;\/ul&gt;\r\n\t&lt;\/div&gt;\r\n &lt;\/div&gt;\r\n \r\n &lt;!----- EXAMPLE #6 - ANGULAR CODE FOR LIMIT-TO FILTER -----&gt;\r\n &lt;div id=\"limitToFilter\" class=\"non\" style=\"display: none\"&gt;\r\n\t&lt;div class=\"login\"&gt;\r\n\t\t&lt;h3 align=\"center\" class=\"text-primary\"&gt;limitTo Filter&lt;\/h3&gt;                          \r\n\t\t&lt;hr\/&gt;\r\n\t\t&lt;p class=\"text-info\"&gt;&lt;strong&gt;Enter a string &amp; length&lt;\/strong&gt;&lt;\/p&gt;\r\n\t\t&lt;input type=\"text\" name=\"lmInput\" id=\"limitTo_input\" ng-model=\"lmInput\" placeholder=\"Enter a name\" class=\"form-control\" \/&gt;\r\n\t\t&lt;div&gt;\u00a0&lt;\/div&gt;\r\n\t\t&lt;input type=\"number\" step=\"1\" ng-model=\"LimitTo\" value=\"2\" placeholder=\"Enter length filter\" class=\"limitTo form-control\" \/&gt;\r\n\t\t&lt;div&gt;\u00a0&lt;\/div&gt;\r\n\t\t&lt;p class=\"text-success\"&gt;&lt;strong&gt;Output : &lt;\/strong&gt; {{ lmInput|limitTo:LimitTo }}&lt;\/p&gt;\r\n\t&lt;\/div&gt;\r\n &lt;\/div&gt;\r\n<\/pre>\n<h3>3.4 Complete Application<\/h3>\n<p>Complete the above steps and I will show you how to use the angular filters with real-life practices. Let\u2019s see the code snippet.<\/p>\n<p><span style=\"text-decoration: underline;\"><em>index.jsp<\/em><\/span><\/p>\n<pre class=\"brush: html; wrap-lines:false;\">&lt;!DOCTYPE html&gt;\r\n&lt;html&gt;\r\n   &lt;head&gt;\r\n      &lt;meta http-equiv=\"Content-Type\" content=\"text\/html; charset=UTF-8\"&gt;\r\n      &lt;title&gt;AngularJs Filters&lt;\/title&gt;\r\n      \r\n      &lt;!-- jQuery &amp; AngularJs Javascript File --&gt;      \r\n      &lt;script type=\"text\/javascript\" src=\"resource\/js\/jquery-3.2.1.min.js\"&gt;&lt;\/script&gt;\r\n      &lt;script type=\"text\/javascript\" src=\"resource\/js\/angular_v1.6.0.js\"&gt;&lt;\/script&gt;\r\n      &lt;script type=\"text\/javascript\" src=\"resource\/js\/friends.js\"&gt;&lt;\/script&gt;\r\n      \r\n      &lt;!-- Bootstrap Css --&gt;\r\n      &lt;link rel=\"stylesheet\" type=\"text\/css\" href=\"resource\/css\/bootstrap.min.style.css\"&gt;\r\n      &lt;link rel=\"stylesheet\" type=\"text\/css\" href=\"https:\/\/maxcdn.bootstrapcdn.com\/bootstrap\/3.3.7\/css\/bootstrap.min.css\"&gt;\r\n      \r\n      &lt;script type=\"text\/javascript\"&gt;      \t \r\n         function reset(data) {\r\n         \t$('.non').css('display', 'none');\r\n         \t$('#' + data).css('display', 'block');\r\n         \t$('td.active').removeClass('active');\r\n         \t$('.' + data).addClass('active');         \t\r\n         }\r\n      &lt;\/script&gt;\r\n   &lt;\/head&gt;\r\n   &lt;body&gt;\r\n      &lt;h1 align=\"center\" class=\"text-primary h1FontStyle\"&gt;AngularJs Filters Example&lt;\/h1&gt;\r\n      &lt;hr\/&gt;\r\n      &lt;div ng-app=\"myApp\" class=\"container\"&gt;\r\n         &lt;div class=\"demo-wrapper row\"&gt;\r\n            &lt;!----- HTML TABLE TO DISPLAY THE ANGULARJS FILTER'S LIST -----&gt;        \r\n            &lt;table class=\"col-md-3 col-md-offset-3 col-xs-12\" border=\"1\"&gt;\r\n               &lt;thead&gt;\r\n                  &lt;tr&gt;&lt;th&gt;&lt;h3 align=\"center\"&gt;Angular Filters&lt;\/h3&gt;&lt;\/th&gt;&lt;\/tr&gt;\r\n               &lt;\/thead&gt;\r\n               &lt;tbody&gt;\r\n                  &lt;tr&gt;&lt;td class=\"currencyFilter active\" id=\"activefilter\" onclick=\"reset('currencyFilter');\"&gt;&lt;h4 class=\"text-muted\"&gt;Currency&lt;\/h4&gt;&lt;\/td&gt;&lt;\/tr&gt;\r\n                  &lt;tr&gt;&lt;td class=\"uppercaseFilter\" onclick=\"reset('uppercaseFilter');\"&gt;&lt;h4 class=\"text-muted\"&gt;Uppercase&lt;\/h4&gt;&lt;\/td&gt;&lt;\/tr&gt;\r\n                  &lt;tr&gt;&lt;td class=\"lowcaseFilter\" onclick=\"reset('lowcaseFilter');\"&gt;&lt;h4 class=\"text-muted\"&gt;Lowercase&lt;\/h4&gt;&lt;\/td&gt;&lt;\/tr&gt;\r\n                  &lt;tr&gt;&lt;td class=\"customfilter\" onclick=\"reset('customfilter');\"&gt;&lt;h4 class=\"text-muted\"&gt;Filter&lt;\/h4&gt;&lt;\/td&gt;&lt;\/tr&gt;\r\n                  &lt;tr&gt;&lt;td class=\"orderFilter\" onclick=\"reset('orderFilter');\"&gt;&lt;h4 class=\"text-muted\"&gt;orderBy&lt;\/h4&gt;&lt;\/td&gt;&lt;\/tr&gt;\r\n                  &lt;tr&gt;&lt;td class=\"limitToFilter\" onclick=\"reset('limitToFilter');\"&gt;&lt;h4 class=\"text-muted\"&gt;limitTo&lt;\/h4&gt;&lt;\/td&gt;&lt;\/tr&gt;\r\n               &lt;\/tbody&gt;\r\n            &lt;\/table&gt;\r\n            &lt;div class=\"col-md-4 col-md-offset-0 col-xs-12\"&gt;\r\n               &lt;div id=\"angularJsFilters\"&gt;               \r\n                  &lt;!----- EXAMPLE #1 - ANGULAR CODE FOR CURRENCY FILTER -----&gt;\r\n                  &lt;div id=\"currencyFilter\" class=\"non default\"&gt;\r\n                     &lt;div class=\"login\"&gt;\r\n                        &lt;h3 align=\"center\" class=\"text-primary\"&gt;Currency Filter&lt;\/h3&gt;\r\n                        &lt;hr\/&gt;\r\n                        &lt;p class=\"text-info\"&gt;&lt;strong&gt;Enter price&lt;\/strong&gt;&lt;\/p&gt;\r\n                        &lt;input type=\"text\" name=\"price\" id=\"entered_price\" ng-model=\"price\" placeholder=\"Enter price\" class=\"form-control\" \/&gt;\r\n                        &lt;div&gt;\u00a0&lt;\/div&gt;\r\n                        &lt;p class=\"text-success\"&gt;&lt;strong&gt;Output : &lt;\/strong&gt;{{ price|currency }}&lt;\/p&gt;\r\n                     &lt;\/div&gt;\r\n                  &lt;\/div&gt;\r\n                  \r\n                  &lt;!----- EXAMPLE #2 - ANGULAR CODE FOR UPPERCASE FILTER -----&gt;\r\n                  &lt;div id=\"uppercaseFilter\" class=\"non\" style=\"display: none\"&gt;\r\n                     &lt;div class=\"login\"&gt;\r\n                        &lt;h3 align=\"center\" class=\"text-primary\"&gt;Uppercase Filter&lt;\/h3&gt;\r\n                        &lt;hr\/&gt;\r\n                        &lt;p class=\"text-info\"&gt;&lt;strong&gt;Enter a string&lt;\/strong&gt;&lt;\/p&gt;\r\n                        &lt;input type=\"text\" name=\"uname\" id=\"uppercase_name\" ng-model=\"uname\" placeholder=\"Enter name in uppercase\" class=\"form-control\" \/&gt;\r\n                        &lt;div&gt;\u00a0&lt;\/div&gt;\r\n                        &lt;p class=\"text-success\"&gt;&lt;strong&gt;Output : &lt;\/strong&gt;{{ uname|uppercase }}&lt;\/p&gt;\r\n                     &lt;\/div&gt;\r\n                  &lt;\/div&gt;\r\n                  \r\n                  &lt;!----- EXAMPLE #3 - ANGULAR CODE FOR LOWERCASE FILTER -----&gt;\r\n                  &lt;div id=\"lowcaseFilter\" class=\"non\" style=\"display: none\"&gt;\r\n                     &lt;div class=\"login\"&gt;\r\n                        &lt;h3 align=\"center\" class=\"text-primary\"&gt;Lowercase Filter&lt;\/h3&gt;\r\n                        &lt;hr\/&gt;\r\n                        &lt;p class=\"text-info\"&gt;&lt;strong&gt;Enter a string&lt;\/strong&gt;&lt;\/p&gt;\r\n                        &lt;input type=\"text\" name=\"lname\" id=\"lowercase_name\" ng-model=\"lname\" placeholder=\"Enter name in lowercase\" class=\"form-control\" \/&gt;\r\n                        &lt;div&gt;\u00a0&lt;\/div&gt;\r\n                        &lt;p class=\"text-success\"&gt;&lt;strong&gt;Output : &lt;\/strong&gt;{{ lname|lowercase }}&lt;\/p&gt;\r\n                     &lt;\/div&gt;\r\n                  &lt;\/div&gt;\r\n                  \r\n                  &lt;!----- EXAMPLE #4 - ANGULAR CODE FOR CUSTOM FILTER -----&gt;\r\n                  &lt;div ng-controller = \"fetchFriends\"&gt;\r\n                     &lt;div id=\"customfilter\" class=\"non\" style=\"display: none\"&gt;\r\n                        &lt;div class=\"login\"&gt;\r\n                           &lt;h3 align=\"center\" class=\"text-primary\"&gt;Filter&lt;\/h3&gt;\r\n                           &lt;hr\/&gt;\r\n                           &lt;p class=\"text-info\"&gt;&lt;strong&gt;Search by Name&lt;\/strong&gt;&lt;\/p&gt;\r\n                           &lt;input type=\"text\" name=\"fname\" id=\"friend_name\" ng-model=\"fname\" placeholder=\"Enter a string\" class=\"form-control\" \/&gt;\r\n                           &lt;!----- FILTER RECORDS BY NAME -----&gt;\r\n                           &lt;div&gt;\u00a0&lt;\/div&gt;\r\n                           &lt;ul class=\"friend_info\"&gt;\r\n                              &lt;li class=\"left info_heading\"&gt;Name&lt;\/li&gt;\r\n                              &lt;li class=\"right info_heading\"&gt;Age&lt;\/li&gt;\r\n                              &lt;li class=\"text-success\" ng-repeat=\"f in friends|filter:{name:fname}\" &gt;\r\n                                 &lt;div id=\"fName\" class=\"left\"&gt;{{ f.name }}&lt;\/div&gt;\r\n                                 &lt;div id=\"fAge\" class=\"right\"&gt;{{ f.age }}&lt;\/div&gt;\r\n                              &lt;\/li&gt;\r\n                           &lt;\/ul&gt;\r\n                           &lt;div&gt;\u00a0&lt;\/div&gt;\r\n                           &lt;p class=\"text-info\"&gt;&lt;strong&gt;Search by Age&lt;\/strong&gt;&lt;\/p&gt;\r\n                           &lt;input type=\"text\" name=\"fage\" id=\"friend_age\" ng-model=\"fage\" placeholder=\"Enter a number\" class=\"form-control\" \/&gt;\r\n                           &lt;!----- FILTER RECORDS BY AGE -----&gt;\r\n                           &lt;div&gt;\u00a0&lt;\/div&gt;\r\n                           &lt;ul class=\"friend_info\"&gt;\r\n                              &lt;li class=\"left info_heading\"&gt;Name&lt;\/li&gt;\r\n                              &lt;li class=\"right info_heading\"&gt;Age&lt;\/li&gt;\r\n                              &lt;li class=\"text-success\" ng-repeat=\"f in friends|filter:{age:fage}\"&gt;\r\n                                 &lt;div id=\"fName\" class=\"left\"&gt;{{ f.name }}&lt;\/div&gt;\r\n                                 &lt;div id=\"fAge\" class=\"right\"&gt;{{ f.age }}&lt;\/div&gt;\r\n                              &lt;\/li&gt;\r\n                           &lt;\/ul&gt;\r\n                        &lt;\/div&gt;\r\n                     &lt;\/div&gt;\r\n                     \r\n                     &lt;!----- EXAMPLE #5 - ANGULAR CODE FOR ORDER-BY FILTER -----&gt;\r\n                     &lt;div id=\"orderFilter\" class=\"non\" style=\"display: none\"&gt;\r\n                        &lt;div class=\"login\"&gt;\r\n                           &lt;h3 align=\"center\" class=\"text-primary\"&gt;orderBy Filter&lt;\/h3&gt;\r\n                           &lt;hr\/&gt;\r\n                           &lt;p class=\"text-info\"&gt;&lt;strong&gt;Select an option&lt;\/strong&gt;&lt;\/p&gt;\r\n                           &lt;select ng-model=\"select\"&gt;\r\n                              &lt;option value=\"\" disabled selected&gt;Select option&lt;\/option&gt;\r\n                              &lt;option value=\"name\"&gt;Name&lt;\/option&gt;\r\n                              &lt;option value=\"age\"&gt;Age&lt;\/option&gt;\r\n                           &lt;\/select&gt;\r\n                           &lt;ul class=\"friend_info\"&gt;\r\n                              &lt;li class=\"left info_heading\"&gt;Name&lt;\/li&gt;\r\n                              &lt;li class=\"right info_heading\"&gt;Age&lt;\/li&gt;\r\n                              &lt;li class=\"text-success\" ng-repeat=\"f in friends|orderBy: select\"&gt;\r\n                                 &lt;div id=\"fName\" class=\"left\"&gt;{{ f.name }}&lt;\/div&gt;\r\n                                 &lt;div id=\"fAge\" class=\"right\"&gt;{{ f.age }}&lt;\/div&gt;\r\n                              &lt;\/li&gt;\r\n                           &lt;\/ul&gt;\r\n                        &lt;\/div&gt;\r\n                     &lt;\/div&gt;\r\n                     \r\n                     &lt;!----- EXAMPLE #6 - ANGULAR CODE FOR LIMIT-TO FILTER -----&gt;\r\n                     &lt;div id=\"limitToFilter\" class=\"non\" style=\"display: none\"&gt;\r\n                        &lt;div class=\"login\"&gt;\r\n                        \t&lt;h3 align=\"center\" class=\"text-primary\"&gt;limitTo Filter&lt;\/h3&gt;                          \r\n                            &lt;hr\/&gt;\r\n                            &lt;p class=\"text-info\"&gt;&lt;strong&gt;Enter a string &amp; length&lt;\/strong&gt;&lt;\/p&gt;\r\n                            &lt;input type=\"text\" name=\"lmInput\" id=\"limitTo_input\" ng-model=\"lmInput\" placeholder=\"Enter a name\" class=\"form-control\" \/&gt;\r\n                            &lt;div&gt;\u00a0&lt;\/div&gt;\r\n                            &lt;input type=\"number\" step=\"1\" ng-model=\"LimitTo\" value=\"2\" placeholder=\"Enter length filter\" class=\"limitTo form-control\" \/&gt;\r\n                            &lt;div&gt;\u00a0&lt;\/div&gt;\r\n                            &lt;p class=\"text-success\"&gt;&lt;strong&gt;Output : &lt;\/strong&gt; {{ lmInput|limitTo:LimitTo }}&lt;\/p&gt;\r\n                        &lt;\/div&gt;\r\n                     &lt;\/div&gt;\r\n                  &lt;\/div&gt;\r\n               &lt;\/div&gt;\r\n            &lt;\/div&gt;\r\n         &lt;\/div&gt;\r\n      &lt;\/div&gt;\r\n   &lt;\/body&gt;\r\n&lt;\/html&gt;\r\n<\/pre>\n<h2>4. Run the Application<\/h2>\n<p>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 <code>Run as -&gt; Run on Server<\/code>.<\/p>\n<figure id=\"attachment_20800\" aria-describedby=\"caption-attachment-20800\" style=\"width: 785px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_deploy_guide_1.jpg\"><img decoding=\"async\" class=\"size-full wp-image-20800\" src=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_deploy_guide_1.jpg\" alt=\"Fig. 6: How to Deploy Application on Tomcat\" width=\"785\" height=\"521\" srcset=\"https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_deploy_guide_1.jpg 785w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_deploy_guide_1-300x199.jpg 300w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_deploy_guide_1-768x510.jpg 768w\" sizes=\"(max-width: 785px) 100vw, 785px\" \/><\/a><figcaption id=\"caption-attachment-20800\" class=\"wp-caption-text\">Fig. 6: How to Deploy Application on Tomcat<\/figcaption><\/figure>\n<p>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<h2>5. Project Demo<\/h2>\n<p>Open your favorite browser and hit the following URL. The output page using the angular filters will be displayed.<\/p>\n<pre class=\"brush:plain; wrap-lines:false;\">http:\/\/localhost:8085\/AngularJsFilters\/\r\n<\/pre>\n<p>Server name (localhost) and port (8085) may vary as per your Tomcat configuration.<\/p>\n<figure id=\"attachment_20801\" aria-describedby=\"caption-attachment-20801\" style=\"width: 849px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_demo_guide_1.jpg\"><img decoding=\"async\" class=\"size-full wp-image-20801\" src=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_demo_guide_1.jpg\" alt=\"Fig. 7: Angular Filters\" width=\"849\" height=\"391\" srcset=\"https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_demo_guide_1.jpg 849w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_demo_guide_1-300x138.jpg 300w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_f_ex_project_demo_guide_1-768x354.jpg 768w\" sizes=\"(max-width: 849px) 100vw, 849px\" \/><\/a><figcaption id=\"caption-attachment-20801\" class=\"wp-caption-text\">Fig. 7: Angular Filters<\/figcaption><\/figure>\n<p>That\u2019s all for this post. Happy Learning!!<\/p>\n<h2>6. Conclusion<\/h2>\n<p>In this section, developers learned how to create a simple application using the angular filters. Developers can download the sample application as an Eclipse project in the <a href=\"#projectDownload\">Downloads<\/a> section.<\/p>\n<h2><a name=\"projectDownload\"><\/a>7. Download the Eclipse Project<\/h2>\n<p>This was an example of <em>Angular Filter<\/em> in the AngularJS framework.<\/p>\n<div class=\"download\"><strong>Download<\/strong><br \/>\nYou can download the full source code of this example here: <a href=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/AngularJsFilters.zip\" target=\"_blank\" rel=\"noopener\"><strong>AngularJsFilters<\/strong><\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Hello readers, in this basic example, developers will learn what AngularJS is and how to use the angular filters in the angular applications. 1. Introduction 1.1 What is AngularJS? AngularJS is a JavaScript MVC or Model-View-Controller framework developed by Google that lets developers build well structured, easily testable, and maintainable front-end applications. Before we start &hellip;<\/p>\n","protected":false},"author":2162,"featured_media":909,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25],"tags":[48,266,376,236,416,63],"class_list":["post-20794","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-angular-js","tag-angular","tag-angularjs","tag-bootstrap","tag-css","tag-html","tag-jquery-2"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>AngularJS Filters Example - Web Code Geeks - 2026<\/title>\n<meta name=\"description\" content=\"Hello readers, in this basic example, developers will learn what AngularJS is and how to use the angular filters in the angular applications.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.webcodegeeks.com\/javascript\/angular-js\/angularjs-filters-example\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"AngularJS Filters Example - 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