{"id":21241,"date":"2018-03-21T16:15:19","date_gmt":"2018-03-21T14:15:19","guid":{"rendered":"http:\/\/www.webcodegeeks.com\/?p=21241"},"modified":"2018-04-18T16:14:24","modified_gmt":"2018-04-18T13:14:24","slug":"angularjs-foreach-example","status":"publish","type":"post","link":"https:\/\/www.webcodegeeks.com\/javascript\/angular-js\/angularjs-foreach-example\/","title":{"rendered":"AngularJS forEach() Example"},"content":{"rendered":"<p>Hello readers, in this tutorial, we will understand how to add the <code>forEach()<\/code> method in the angular web applications.<\/p>\n<h2>1. Introduction<\/h2>\n<p>Before we begin with the tutorial, let\u2019s take a look at the Angular JavaScript and its characteristics.<\/p>\n<h3>1.1 Angular JavaScript<\/h3>\n<p><em>Angular<\/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. But before we start creating a real application using the angular library, let us see what the important parts of an angular application are.<\/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.<br \/>\n[ulp id=&#8217;LXJcMJZXSsqGXYW8&#8242;]<\/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 <code>ng<\/code>. The directives consist of the following parts:<\/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-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<li><code>ng-controller<\/code>: The <code>ng-controller<\/code> directive specifies a controller in the HTML element. This controller will add behavior or support the data in that HTML element and its child elements<\/li>\n<li><code>ng-repeat<\/code>: The <code>ng-repeat<\/code> directive repeat a set of HTML 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>. Angular library evaluates the expression and produces a result.<\/p>\n<h3>1.2 &#8216;forEach()&#8217; method in Angular<\/h3>\n<p><code>forEach()<\/code> method in the angular library is used to iterate each item in an object or an array. This method helps the developer to read each element using the key of an object or an index of an array. In angular web applications, developers can use the <code>forEach()<\/code> method in the following way:<\/p>\n<p><span style=\"text-decoration: underline;\"><em>Angular &#8216;forEach()&#8217; Syntax<\/em><\/span><\/p>\n<pre class=\"brush:js; wrap-lines:false;\">angular.forEach(Object_or_Array, iterator, [context]);\r\n<\/pre>\n<p>Where:<\/p>\n<ul>\n<li>The first value is an object or an array to iterate over<\/li>\n<li>The second value is an iterate function invoked for each item in an object or an array<\/li>\n<li>The third value is the context object for the iterator function<\/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 example to show the functionality of the <code>forEach()<\/code> method in the angular library.<\/p>\n<h2>2. AngularJS forEach() Example<\/h2>\n<p>Here is a step-by-step guide for implementing the <code>forEach()<\/code> method in the angular web 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_21242\" aria-describedby=\"caption-attachment-21242\" style=\"width: 287px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_project_structure_guide_1.jpg\"><img decoding=\"async\" class=\"size-full wp-image-21242\" src=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_project_structure_guide_1.jpg\" alt=\"Fig. 1: Application Project Structure\" width=\"287\" height=\"322\" srcset=\"https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_project_structure_guide_1.jpg 287w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_project_structure_guide_1-267x300.jpg 267w\" sizes=\"(max-width: 287px) 100vw, 287px\" \/><\/a><figcaption id=\"caption-attachment-21242\" 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_21243\" aria-describedby=\"caption-attachment-21243\" style=\"width: 657px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_ex_project_guide_1.jpg\"><img decoding=\"async\" class=\"size-full wp-image-21243\" src=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_ex_project_guide_1.jpg\" alt=\"Fig. 2: Create Maven Project\" width=\"657\" height=\"690\" srcset=\"https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_ex_project_guide_1.jpg 657w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_ex_project_guide_1-286x300.jpg 286w\" sizes=\"(max-width: 657px) 100vw, 657px\" \/><\/a><figcaption id=\"caption-attachment-21243\" 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_21244\" aria-describedby=\"caption-attachment-21244\" style=\"width: 598px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_ex_project_guide_2.jpg\"><img decoding=\"async\" class=\"size-full wp-image-21244\" src=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_ex_project_guide_2.jpg\" alt=\"Fig. 3: Project Details\" width=\"598\" height=\"543\" srcset=\"https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_ex_project_guide_2.jpg 598w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_ex_project_guide_2-300x272.jpg 300w\" sizes=\"(max-width: 598px) 100vw, 598px\" \/><\/a><figcaption id=\"caption-attachment-21244\" 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_21245\" aria-describedby=\"caption-attachment-21245\" style=\"width: 597px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_ex_project_guide_3.jpg\"><img decoding=\"async\" class=\"size-full wp-image-21245\" src=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_ex_project_guide_3.jpg\" alt=\"Fig. 4: Archetype Selection\" width=\"597\" height=\"541\" srcset=\"https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_ex_project_guide_3.jpg 597w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_ex_project_guide_3-300x272.jpg 300w\" sizes=\"(max-width: 597px) 100vw, 597px\" \/><\/a><figcaption id=\"caption-attachment-21245\" 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_21246\" aria-describedby=\"caption-attachment-21246\" style=\"width: 598px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_ex_project_guide_4.jpg\"><img decoding=\"async\" class=\"size-full wp-image-21246\" src=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_ex_project_guide_4.jpg\" alt=\"Fig. 5: Archetype Parameters\" width=\"598\" height=\"536\" srcset=\"https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_ex_project_guide_4.jpg 598w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_ex_project_guide_4-300x269.jpg 300w\" sizes=\"(max-width: 598px) 100vw, 598px\" \/><\/a><figcaption id=\"caption-attachment-21246\" 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;AngularForEach&lt;\/groupId&gt;\r\n\t&lt;artifactId&gt;AngularForEach&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<h2>3. Application Building<\/h2>\n<p>Let\u2019s start building an application to understand the basic building blocks of the <code>forEach()<\/code> method in the angular library.<\/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-controller&gt;<\/code> directives.<\/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-controller=\"myCtrl\"&gt;\r\n ...\r\n&lt;\/div&gt;\r\n<\/pre>\n<h3>3.3 Create the Angular controller<\/h3>\n<p>The <code>ang_forEach.js<\/code> javascript file has the <code>forEach<\/code> method which is using the given array. The names specified in the array are assigned to the <code>days_list<\/code> variable and are bind to the <code>ng-repeat<\/code> tag on the <code>index.jsp<\/code>.<\/p>\n<p><span style=\"text-decoration: underline;\"><em>ang_forEach.js<\/em><\/span><\/p>\n<pre class=\"brush:js; wrap-lines:false;\">var app = angular.module('myApp', []);\r\n\r\napp.controller('myCtrl', ['$scope', function($scope) {\r\n\r\n\t$scope.days_list = [];\r\n\r\n\tvar values = [{\r\n\t\tid: '1',\r\n\t\tname: \"Monday\"\r\n\t}, {\r\n\t\tid: '2',\r\n\t\tname: \"Tuesday\"\r\n\t}, {\r\n\t\tid: '3',\r\n\t\tname: \"Wednesday\"\r\n\t}, {\r\n\t\tid: '4',\r\n\t\tname: \"Thursday\"\r\n\t}, {\r\n\t\tid: '5',\r\n\t\tname: \"Friday\"\r\n\t}, {\r\n\t\tid: '6',\r\n\t\tname: \"Saturday\"\r\n\t}, {\r\n\t\tid: '7',\r\n\t\tname: \"Sunday\"\r\n\t}];\r\n\r\n\tangular.forEach(values, function(value, key) {\r\n\t\t$scope.days_list.push(value.name);\r\n\t});\r\n}]);\r\n<\/pre>\n<h3>3.4 Complete Application<\/h3>\n<p>In this example, the values of an array are displayed by using the <code>forEach<\/code> method of the angular library. Complete the above steps to show the front view and understand the use of the <code>forEach()<\/code> method in an angular web application.<\/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 forEach&lt;\/title&gt;\r\n      \r\n      &lt;!-- AngularJs Files --&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\/ang_forEach.js\"&gt;&lt;\/script&gt;\r\n      \r\n      &lt;!-- Bootstrap File --&gt;\r\n      &lt;link rel=\"stylesheet\" href=\"https:\/\/maxcdn.bootstrapcdn.com\/bootstrap\/4.0.0-alpha.6\/css\/bootstrap.min.css\"&gt;\r\n   &lt;\/head&gt;\r\n   &lt;body&gt;\r\n      &lt;div id=\"angularforEach\" class=\"container\"&gt;\r\n         &lt;h1 align=\"center\" class=\"text-primary\"&gt;AngularJS forEach() Example&lt;\/h1&gt;\r\n         &lt;hr \/&gt;\r\n         \r\n         &lt;!------ ANGULAR JAVASCRIPT 'forEach()' EXAMPLE ------&gt;\r\n         &lt;div ng-app=\"myApp\" ng-controller=\"myCtrl\"&gt;\r\n            &lt;h3 class=\"text-warning\"&gt;A demo of '&lt;em&gt;forEach()&lt;\/em&gt;' method in Angular JavaScript&lt;\/h3&gt;\r\n            &lt;div id=\"days\"&gt;\r\n               &lt;div id=\"name\" ng-repeat=\"name in days_list\"&gt;\r\n                  {{ name }}\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 tomcat 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_21247\" aria-describedby=\"caption-attachment-21247\" style=\"width: 779px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_project_deploy_guide_1.jpg\"><img decoding=\"async\" class=\"size-full wp-image-21247\" src=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_project_deploy_guide_1.jpg\" alt=\"Fig. 6: How to Deploy Application on Tomcat\" width=\"779\" height=\"433\" srcset=\"https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_project_deploy_guide_1.jpg 779w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_project_deploy_guide_1-300x167.jpg 300w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_project_deploy_guide_1-768x427.jpg 768w\" sizes=\"(max-width: 779px) 100vw, 779px\" \/><\/a><figcaption id=\"caption-attachment-21247\" 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 will be displayed.<\/p>\n<pre class=\"brush:plain; wrap-lines:false;\">http:\/\/localhost:8080\/AngularForEach\/\r\n<\/pre>\n<p>Server name (localhost) and port (8080) may vary as per your Tomcat configuration.<\/p>\n<figure id=\"attachment_21248\" aria-describedby=\"caption-attachment-21248\" style=\"width: 820px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_project_demo_guide_1-iloveimg-resized.jpg\"><img decoding=\"async\" class=\"wp-image-21248\" src=\"http:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_project_demo_guide_1-iloveimg-resized.jpg\" alt=\"Fig. 7: Output page\" width=\"820\" height=\"214\" srcset=\"https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_project_demo_guide_1-iloveimg-resized.jpg 848w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_project_demo_guide_1-iloveimg-resized-300x78.jpg 300w, https:\/\/www.webcodegeeks.com\/wp-content\/uploads\/2018\/03\/angular_fe_project_demo_guide_1-iloveimg-resized-768x200.jpg 768w\" sizes=\"(max-width: 820px) 100vw, 820px\" \/><\/a><figcaption id=\"caption-attachment-21248\" class=\"wp-caption-text\">Fig. 7: Output page<\/figcaption><\/figure>\n<p>In this example, we have the values stored as an array object and <code>angular.forEach<\/code> iterate on each property of the object. The <code>push()<\/code> method will add the name property in the <code>days_list<\/code> array and display it on the front-end as shown in Fig. 7.<\/p>\n<p>That\u2019s all for this post. Happy Learning!!<\/p>\n<h2>6. Conclusion<\/h2>\n<p>In this section, developers learned the <code>forEach()<\/code> method in 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 a tutorial of the <code>forEach()<\/code> feature in the angular library.<\/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\/03\/AngularForEach.zip\" target=\"_blank\" rel=\"noopener\"><strong>AngularForEach<\/strong><\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Hello readers, in this tutorial, we will understand how to add the forEach() method in the angular web applications. 1. Introduction Before we begin with the tutorial, let\u2019s take a look at the Angular JavaScript and its characteristics. 1.1 Angular JavaScript Angular is a JavaScript MVC or Model-View-Controller framework developed by Google that lets developers &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":[48,519,266,524],"class_list":["post-21241","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-angular-js","tag-angular","tag-angular-js","tag-angularjs","tag-foreach"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>AngularJS forEach() Example - Web Code Geeks - 2026<\/title>\n<meta name=\"description\" content=\"Hello readers, in this tutorial, we will understand how to add the forEach() method in the angular web 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-foreach-example\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"AngularJS forEach() Example - 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