{"id":20866,"date":"2018-02-14T16:15:26","date_gmt":"2018-02-14T14:15:26","guid":{"rendered":"http:\/\/www.webcodegeeks.com\/?p=20866"},"modified":"2018-02-14T16:03:29","modified_gmt":"2018-02-14T14:03:29","slug":"angularjs-accordion-example","status":"publish","type":"post","link":"https:\/\/www.webcodegeeks.com\/javascript\/angular-js\/angularjs-accordion-example\/","title":{"rendered":"AngularJS Accordion Example"},"content":{"rendered":"<p>Hello readers, <strong>accordions<\/strong> are the <code>HTML<\/code> components used to expand and collapse the content divided into different sections. In this tutorial, we will see how to make the accordion tabs in the angular framework.<\/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. The angular 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 angular 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-init<\/code>: The <code>ng-init<\/code> directive initialize the application data<\/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 angular application data to the <code>HTML<\/code> input controls<\/li>\n<li><code>ng-bind<\/code>: The <code>ng-bind<\/code> directive binds the angular application data to the <code>HTML<\/code> tags<\/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>. The angular library evaluates the expression and produces a result.<\/p>\n<h3>1.2 What is Accordion?<\/h3>\n<p>An accordion is an <code>HTML<\/code> component used to show and hide the content divided into different sections. This structure allows developers to create simple items, tasks or categories. In this tutorial, we have used the below directives to make a jQuery-like accordion.<\/p>\n<ul>\n<li>The <code>ng-click<\/code>angular directive links each accordion content<\/li>\n<li>The <code>ng-show<\/code> angular directive displays the accordion content based on the <code>ng-click<\/code><\/li>\n<li>The <code>ng-init<\/code> angular directive initialize the application data and evaluates the first accordion on the page load<\/li>\n<\/ul>\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 accordion application using the angular library.<\/p>\n<h2>2. AngularJS Accordion Example<\/h2>\n<p>Here is a step-by-step guide for implementing the accordion part 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_20867\" aria-describedby=\"caption-attachment-20867\" style=\"width: 297px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_ex_project_structure_guide_1.jpg\"><img decoding=\"async\" class=\"size-full wp-image-20867\" src=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_ex_project_structure_guide_1.jpg\" alt=\"Fig. 1: Application Project Structure\" width=\"297\" height=\"379\" srcset=\"https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_ex_project_structure_guide_1.jpg 297w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_ex_project_structure_guide_1-235x300.jpg 235w\" sizes=\"(max-width: 297px) 100vw, 297px\" \/><\/a><figcaption id=\"caption-attachment-20867\" 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_20868\" aria-describedby=\"caption-attachment-20868\" style=\"width: 657px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_ex_project_guide_1.jpg\"><img decoding=\"async\" class=\"size-full wp-image-20868\" src=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_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_accordion_ex_project_guide_1.jpg 657w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_ex_project_guide_1-286x300.jpg 286w\" sizes=\"(max-width: 657px) 100vw, 657px\" \/><\/a><figcaption id=\"caption-attachment-20868\" 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_20869\" aria-describedby=\"caption-attachment-20869\" style=\"width: 598px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_ex_project_guide_2.jpg\"><img decoding=\"async\" class=\"size-full wp-image-20869\" src=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_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_accordion_ex_project_guide_2.jpg 598w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_ex_project_guide_2-300x272.jpg 300w\" sizes=\"(max-width: 598px) 100vw, 598px\" \/><\/a><figcaption id=\"caption-attachment-20869\" 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_20870\" aria-describedby=\"caption-attachment-20870\" style=\"width: 597px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_ex_project_guide_3.jpg\"><img decoding=\"async\" class=\"size-full wp-image-20870\" src=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_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_accordion_ex_project_guide_3.jpg 597w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_ex_project_guide_3-300x272.jpg 300w\" sizes=\"(max-width: 597px) 100vw, 597px\" \/><\/a><figcaption id=\"caption-attachment-20870\" 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_20871\" aria-describedby=\"caption-attachment-20871\" style=\"width: 606px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_ex_project_guide_4.jpg\"><img decoding=\"async\" class=\"size-full wp-image-20871\" src=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_ex_project_guide_4.jpg\" alt=\"Fig. 5: Archetype Parameters\" width=\"606\" height=\"540\" srcset=\"https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_ex_project_guide_4.jpg 606w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_ex_project_guide_4-300x267.jpg 300w\" sizes=\"(max-width: 606px) 100vw, 606px\" \/><\/a><figcaption id=\"caption-attachment-20871\" 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;AngularJsAccordion&lt;\/groupId&gt;\r\n\t&lt;artifactId&gt;AngularJsAccordion&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 accordion.<\/p>\n<h3>3.1 Load the Angular 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 Angular application<\/h3>\n<p>Next, we will define the angular application using the <code>&lt;ng-app&gt;<\/code>and <code>&lt;ng-init&gt;<\/code>directives. The <code>&lt;ng-init&gt;<\/code> directive evaluates the expression in the current scope and by-default displays the first accordion.<\/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\"ng-init=\"accordion=1\"&gt;\r\n ...\r\n&lt;\/div&gt;\r\n<\/pre>\n<h3>3.3 Complete Application<\/h3>\n<p>Complete the above steps and I will show you how to use the angular accordion 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\t&lt;head&gt;\r\n\t    &lt;meta http-equiv=\"Content-Type\" content=\"text\/html; charset=UTF-8\"&gt;\r\n\t    &lt;title&gt;AngularJS Accordion&lt;\/title&gt;\r\n\t\r\n\t    &lt;!-- AngularJs Javascript File --&gt;\r\n\t    &lt;script type=\"text\/javascript\" src=\"resource\/js\/angular_v1.6.0.js\"&gt;&lt;\/script&gt;\r\n\t    &lt;script type=\"text\/javascript\" src=\"resource\/js\/accordion.js\"&gt;&lt;\/script&gt;\r\n\t\r\n\t    &lt;!-- Bootstrap Css --&gt;\r\n\t    &lt;link rel=\"stylesheet\" href=\"https:\/\/maxcdn.bootstrapcdn.com\/bootstrap\/4.0.0\/css\/bootstrap.min.css\"&gt;\r\n\t    &lt;link rel=\"stylesheet\" href=\"resource\/css\/accordion.min.css\"&gt;\r\n\t&lt;\/head&gt;\t\r\n\t&lt;body&gt;\r\n\t    &lt;div id=\"angularAccordion\" class=\"container\"&gt;\r\n\t        &lt;h1 align=\"center\" class=\"text-primary\"&gt;AngularJS - Accordion Example&lt;\/h1&gt;\r\n\t        &lt;hr \/&gt;\r\n\t\r\n\t        &lt;div ng-app=\"myApp\" ng-init=\"accordion=1\"&gt;\r\n\t            &lt;!------ DIRECTIVE HEADER ------&gt;\r\n\t            &lt;h3 class=\"accordion\" ng-class=\"{active:accordion==1}\"&gt;\r\n\t                &lt;a class=\"pointer\" ng-click=\"accordion = 1\"&gt;\r\n\t               \t\t&lt;span class=\"sectionText\"&gt;Section 1&lt;\/span&gt;\r\n\t               \t&lt;\/a&gt;\r\n\t            &lt;\/h3&gt;\r\n\t            &lt;p class=\"accordion-content text-info\" ng-show=\"accordion==1\"&gt;Mus. Eget iaculis ridiculus ante nascetur lorem. Id. Fusce interdum.&lt;\/p&gt;\r\n\t\r\n\t            &lt;!------ COLLAPSIBLE HEADER #1 ------&gt;\r\n\t            &lt;h3 class=\"accordion\" ng-class=\"{active:accordion==2}\"&gt;\r\n\t                &lt;a class=\"pointer\" ng-click=\"accordion = 2\"&gt;\r\n\t               \t\t&lt;span class=\"sectionText\"&gt;Section 2&lt;\/span&gt;\r\n\t               \t&lt;\/a&gt;\r\n\t            &lt;\/h3&gt;\r\n\t            &lt;p class=\"accordion-content text-info\" ng-show=\"accordion==2\"&gt;Fringilla curae; hymenaeos nisl dapibus at Condimentum natoque nisi luctus. Donec lectus pede, urna netus condimentum litora.&lt;\/p&gt;\r\n\t\r\n\t            &lt;!------ COLLAPSIBLE HEADER #2 ------&gt;\r\n\t            &lt;h3 class=\"accordion\" ng-class=\"{active:accordion==3}\"&gt;\r\n\t                &lt;a class=\"pointer\" ng-click=\"accordion = 3\"&gt;\r\n\t               \t\t&lt;span class=\"sectionText\"&gt;Section 3&lt;\/span&gt;\r\n\t               \t&lt;\/a&gt;\r\n\t            &lt;\/h3&gt;\r\n\t            &lt;p class=\"accordion-content text-info\" ng-show=\"accordion==3\"&gt;Vulputate ad habitant sem nostra ullamcorper eros accumsan cubilia consectetuer fames, ad class.&lt;\/p&gt;\r\n\t        &lt;\/div&gt;\r\n\t    &lt;\/div&gt;\r\n\t&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_20872\" aria-describedby=\"caption-attachment-20872\" style=\"width: 815px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_ex_project_deploy_guide_1.jpg\"><img decoding=\"async\" class=\"size-full wp-image-20872\" src=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_ex_project_deploy_guide_1.jpg\" alt=\"Fig. 6: How to Deploy Application on Tomcat\" width=\"815\" height=\"449\" srcset=\"https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_ex_project_deploy_guide_1.jpg 815w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_ex_project_deploy_guide_1-300x165.jpg 300w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_ex_project_deploy_guide_1-768x423.jpg 768w\" sizes=\"(max-width: 815px) 100vw, 815px\" \/><\/a><figcaption id=\"caption-attachment-20872\" 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 accordion will be displayed.<\/p>\n<pre class=\"brush:plain; wrap-lines:false;\">http:\/\/localhost:8082\/AngularJsAccordion\/\r\n<\/pre>\n<p>Server name (localhost) and port (8082) may vary as per your Tomcat configuration.<\/p>\n<figure id=\"attachment_20873\" aria-describedby=\"caption-attachment-20873\" style=\"width: 849px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_ex_project_demo_guide_1.jpg\"><img decoding=\"async\" class=\"size-full wp-image-20873\" src=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_ex_project_demo_guide_1.jpg\" alt=\"Fig. 7: Accordion in Angular framework\" width=\"849\" height=\"234\" srcset=\"https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_ex_project_demo_guide_1.jpg 849w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_ex_project_demo_guide_1-300x83.jpg 300w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/02\/angular_accordion_ex_project_demo_guide_1-768x212.jpg 768w\" sizes=\"(max-width: 849px) 100vw, 849px\" \/><\/a><figcaption id=\"caption-attachment-20873\" class=\"wp-caption-text\">Fig. 7: Accordion in the Angular framework<\/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 accordion application using the angular library. 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 an <em>accordion<\/em> in the angular 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\/AngularJsAccordion.zip\" target=\"_blank\" rel=\"noopener\"><strong>AngularJsAccordion<\/strong><\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Hello readers, accordions are the HTML components used to expand and collapse the content divided into different sections. In this tutorial, we will see how to make the accordion tabs in the angular framework. 1. Introduction 1.1 What is AngularJS? AngularJS is a JavaScript MVC or Model-View-Controller framework developed by Google that lets developers build &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":[208,48,266],"class_list":["post-20866","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-angular-js","tag-accordion","tag-angular","tag-angularjs"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>AngularJS Accordion Example - Web Code Geeks - 2026<\/title>\n<meta name=\"description\" content=\"Accordions are the HTML components used to expand and collapse the content divided into different sections. 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