tencent-captcha

A simple library of captcha based on tencentcloud-sdk-nodejs.

Install

Using npm

npm install tencent-captcha --save

Usage

Browser usage

You can see the client access CAPTCHA from this document for details.

Using TencentCaptcha JSSDK

<script src="https://ssl.captcha.qq.com/TCaptcha.js"></script>

Create instance of TencentCaptcha, include callback function

var T_Captcha = new TencentCaptcha('your_tencentcloud_application_ID', function(res) {
    //a callback from TencentCaptcha server
    if (res && res.ret == 0) {
        //success
        T_Captcha.destroy();
        //ajax request the relevant verification interface of the server.
        //you can see the following step [Node.js usage] to perform server-side validation.
    } else {
        //failure
    }
});

Man-machine verification enabled

T_Captcha.show();

Node.js usage

You can see the validation interface of Tencent Captcha from this document for details.

const TencentCaptcha = require('tencent-captcha');
const captcha = new TencentCaptcha({
    secretId: 'your_tencentcloud_API_secretId',
    secretKey: 'your_tencentcloud_API_secretKey',
    appId: 'your_tencentcloud_application_ID',
    appSecretKey: 'your_tencentcloud_application_secretKey'
});
try {
    const res = await Captcha.validate(ticket, randstr, ip);
    if (res.CaptchaCode === 1) {
        //success
    } else {
        //failure
    }
} catch(e) {
    //catch tencentcloud-sdk-nodejs exception
}

You can get related secret ID and key from Tencent Cloud Console.

Method

Create an instance of TencentCaptcha in server

new TencentCaptcha(options);

• options => tencentcloud-sdk-nodejs'config object.(required)

options field description

• secretId => {String} tencentcloud API secretId.(required)
• secretKey => {String} tencentcloud API secretKey.(required)
• appId => {String} tencentcloud application ID.(required)
• appSecretKey => {String} tencentcloud application secretKey.(required)

Using the following API to ensure the ticket is valid

captcha.validate(ticket, randstr, ip)

• ticket => {String} user authentication ticket from client's callback function.(required)
• randstr => {String} random string from client's callback function.(required)
• ip => {String} User ip.(required)

The Return value of this method is a promise, you can use async-await synchronizing code. You can see data structure returned from the interface of Tencent Captcha by document.

License

tencent-captcha is MIT licensed.