angularjs-captcha
v1.6.1
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BotDetect CAPTCHA AngularJS Module (JavaScript: Angular 1.x)
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BotDetect CAPTCHA AngularJS Module (JavaScript: Angular 1.x)
For a comprehensive step-by-step integration guide please see our AngularJS Captcha Module Integration Guide.
The guide covers the integration with the following backends:
- ASP.NET (Core): web API with MVC Core
- ASP.NET (Legacy): Web-API2, MVC1-5, Generic Handler
- Java: Servlet, Spring, Struts
- PHP: the plain PHP
To give you a hint how AngularJS Captcha Module works we pasted bellow a few, not necessary up-to-date (and mostly frontend related), excerpts from the Integration Guide.
Quick guide:
1) AngularJS Captcha Module Installation
npm install angularjs-captcha --save
2) Include AngularJS Captcha Module in Your App
<script src="node_modules/angularjs-captcha/dist/angularjs-captcha.min.js"></script>
3) Inject AngularJS Captcha Module to Your AngularJS App, and Configure Backend Captcha Endpoint
Endpoint configuration depends on which technology you use in the backend.
- ASP.NET-based captcha endpoint:
var app = angular.module('app', ['BotDetectCaptcha']);
app.config(function(captchaSettingsProvider) {
...
captchaSettingsProvider.setSettings({
captchaEndpoint:
'https://your-app-backend-hostname.your-domain.com/simple-captcha-endpoint.ashx'
});
});
- Java-based captcha endpoint:
var app = angular.module('app', ['BotDetectCaptcha']);
app.config(function(captchaSettingsProvider) {
...
captchaSettingsProvider.setSettings({
captchaEndpoint:
'https://your-app-backend-hostname.your-domain.com/simple-captcha-endpoint'
});
});
- PHP-based captcha endpoint:
var app = angular.module('app', ['BotDetectCaptcha']);
app.config(function(captchaSettingsProvider) {
...
captchaSettingsProvider.setSettings({
captchaEndpoint:
'https://your-app-backend-hostname.your-domain.com/botdetect-captcha-lib/simple-botdetect.php'
});
});
4) Display Captcha In Your AngularJS Template
<botdetect-captcha captchaStyleName="yourFirstCaptchaStyle"></botdetect-captcha>
<input id="userCaptchaInput"
type="text"
name="userCaptchaInput"
ng-model="userCaptchaInput" >
5) Captcha Validation: Client-side Code
app.controller('YourFormWithCaptchaController',
function ($scope, $http, $window, Captcha) {
// process the form on submit event
$scope.validate = function () {
// create new AngularJS Captcha instance
var captcha = new Captcha();
// get the user-entered captcha code value to be validated at the backend side
var userEnteredCaptchaCode = captcha.getUserEnteredCaptchaCode();
// get the id of a captcha instance that the user tried to solve
var captchaId = captcha.getCaptchaId();
var postData = {
// add the user-entered captcha code value to the post data
userEnteredCaptchaCode: userEnteredCaptchaCode,
// add the id of a captcha instance to the post data
captchaId: captchaId
};
// post the captcha data to the /your-app-backend-path on your backend
$http({
headers: { 'Content-Type': 'application/json; charset=utf-8' }
method: 'POST',
url: 'https://your-app-backend-hostname.your-domain.com/your-app-backend-path',
data: postData
})
.then(function (response) {
if (response.data.success == false) {
// captcha validation failed; reload image
captcha.reloadImage();
// TODO: maybe display an error message, too
} else {
// TODO: captcha validation succeeded; proceed with the workflow
}
}, function (error) {
throw new Error(error.data);
});
};
});
6) Captcha Validation: Server-side Code
The userEnteredCaptchaCode
and captchaId
values posted from the frontend are used to validate a captcha challenge on the backend.
The validation is performed by calling the: Validate(userEnteredCaptchaCode, captchaId)
.
- Server-side Captcha validation with ASP.NET Captcha looks in this way:
// C#
SimpleCaptcha yourFirstCaptcha = new SimpleCaptcha();
bool isHuman = yourFirstCaptcha.Validate(userEnteredCaptchaCode, captchaId);
' VB.NET
Dim yourFirstCaptcha As SimpleCaptcha = New SimpleCaptcha()
Dim isHuman As Boolean = yourFirstCaptcha.Validate(userEnteredCaptchaCode, captchaId)
- Server-side Captcha validation with Java Captcha looks in this way:
SimpleCaptcha yourFirstCaptcha = SimpleCaptcha.load(request);
boolean isHuman = yourFirstCaptcha.validate(userEnteredCaptchaCode, captchaId);
- Server-side Captcha validation with PHP Captcha looks in this way:
$yourFirstCaptcha = new SimpleCaptcha();
$isHuman = $yourFirstCaptcha->Validate($userEnteredCaptchaCode, $captchaId);
Documentation:
AngularJS Captcha Module Step-by-step Integration Guide -- read this one first
AngularJS Captcha Module Basic Example -- partial code walk-through
AngularJS Captcha Module Form Example -- partial code walk-through
Dependencies:
The current version of the AngularJS Captcha Module requires one of the following BotDetect CAPTCHA backends:
Technical Support:
Through contact form on captcha.com.