How to create a custom AngularJS component for survey and polling?
13/03/2024
•
5
min
Before starting this tutorial, make sure you have some prior knowledge about AngularJS, a JavaScript-based open-source front-end web application framework.
Step 1: Setting Up AngularJS
You need to include the AngularJS library in your HTML document. You can add the following script code in the head section of your HTML page:
<!DOCTYPE html>
<html>
<head>
<!--Latest AngularJS -->
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.7.9/angular.min.js"></script>
</head>
<body>
</body>
</html>
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Step 2: Creating the AngularJS Module and Controller
We will create an AngularJS module called "surveyApp". Inside this module, we will also create a controller named "SurveyController".
<script>
var app = angular.module('surveyApp', []);
app.controller('SurveyController', function($scope) {
// your logic here
});
</script>
The "$scope" parameter is an object that represents the scope of the controller and acts as a bridge between the HTML and JavaScript.
Step 3: Creating the HTML Markup for the Survey
Next, we will add the HTML markup for the survey application. For simplicity, we will create a multiple-choice questionnaire having questions and multiple options under each question. Remember to attach "ng-app" and "ng-controller" to your HTML body tag.
<body ng-app="surveyApp" ng-controller="SurveyController">
<div ng-repeat="question in surveyQuestions">
<p>{{question.text}}</p>
<div ng-repeat="option in question.options">
<input type="radio" name="{{question.id}}" value="{{option.id}}"> {{option.text}}
</div>
</div>
</body>
Step 4: Adding Data to the Controller
Inside the SurveyController, you will have to add the code for setting the questions and options using the '$scope' object.
$scope.surveyQuestions = [
{
id: 1,
text: 'What is your favorite color?',
options: [
{id: 'a', text: 'Red'},
{id: 'b', text: 'Green'},
{id: 'c', text: 'Blue'}
]
},
// add more questions if required
];
These definitions will be used to generate the survey forms dynamically.
Step 5: Collecting the Responses
Make sure you have some way to store the user responses. One way is to add another $scope variable for it.
$scope.responses = {};
Next, update your input elements to link them with your responses.
<input type="radio" name="{{question.id}}" ng-value="{{option.id}}"
ng-model="responses[question.id]">{{option.text}}
We have now created an AngularJS component for a basic survey and polling system. For a more robust system, you may want to add features to validate the responses, handle form submissions, etc. and style your form for better usability. Note that AngularJS also allows you to create custom directives, which lets you define reusable components or modify the behavior of existing elements. If this text doesn't contain a numbered list, just don't change anything and reply with the same text.
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