Getting started in EJ2 TypeScript OTP Input control

18 Jul 20245 minutes to read

This section explains how to create a simple OTP Input control and configure its available functionalities in TypeScript, using Essential JS 2 quickstart seed repository.

This application is integrated with the webpack.config.js configuration and uses the latest version of the webpack-cli. It requires node v14.15.0 or higher. For more information about webpack and its features, refer to the webpack documentation.

Dependencies

The list of dependencies required to use the OTP Input control in your application is given as follows:

|-- @syncfusion/ej2-inputs
    |-- @syncfusion/ej2-base

Set up development environment

Open the command prompt from the required directory, and run the following command to clone the Syncfusion JavaScript (Essential JS 2) quickstart project from GitHub.

git clone https://github.com/SyncfusionExamples/ej2-quickstart-webpack- ej2-quickstart

After cloning the application in the ej2-quickstart folder, run the following command line to navigate to the ej2-quickstart folder.

cd ej2-quickstart

Add Syncfusion JavaScript packages

Syncfusion JavaScript (Essential JS 2) packages are available on the npmjs.com public registry. You can install all Syncfusion JavaScript (Essential JS 2) controls in a single @syncfusion/ej2 package or individual packages for each control.

The quickstart application is preconfigured with the dependent @syncfusion/ej2 package in the ~/package.json file. Use the following command to install the dependent npm packages from the command prompt.

npm install

Import the Syncfusion CSS styles

To render OTP Input control, need to import inputs and its dependent controls styles as given below in the ~/src/styles/styles.css file, as shown below:

@import "../../node_modules/@syncfusion/ej2-base/styles/material.css";
@import "../../node_modules/@syncfusion/ej2-inputs/styles/material.css";

Adding OTP Input to the Application

Add the HTML input tag with ID attribute as the element to your index.html file.

[src/index.html]

<!DOCTYPE html>
<html lang="en">

<head>
    <title>Essential JS 2 OTP Input</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no" />
    <meta name="description" content="Essential JS 2 OTP Input" />
    <meta name="author" content="Syncfusion" />
    <link rel="shortcut icon" href="resources/favicon.ico" />
    <link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />
</head>

<body>
    <div class="otp-container" style="width: 350px;">
        <div id="element"></div>
    </div>
</body>

</html>

Then, import the OTP Input control in your app.ts file, and initialize it with the #element.

[src/app/app.ts]

import { OtpInput } from "@syncfusion/ej2-inputs";

// Initializes the OTP Input control
let otpInput: OtpInput = new OtpInput({});

// Render initialized OTP Input.
otpInput.appendTo('#element');

Run the application

Run the application in the browser using the following command.

npm start

The following example shows a basic OTP Input control.

import { OtpInput } from "@syncfusion/ej2-inputs";

// Initializes the OTP Input control
let otpInput: OtpInput = new OtpInput({});

// Render initialized OTP Input.
otpInput.appendTo('#otp_default');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Essential JS 2 - OTP Input</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no" />
    <meta name="description" content="Essential JS 2" />
    <meta name="author" content="Syncfusion" />
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-inputs/styles/material.css" rel="stylesheet" />

    <!--style reference from app-->
    <link href="index.css" rel="stylesheet" />

    <!--system js reference and configuration-->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>
<body>
    <div id='loader'>LOADING....</div>
    <div id='container' style="width: 350px;">
        <div id="otp_default"></div>
    </div>
</body>

</html>
#container {
  visibility: hidden;
  margin: 50px auto;
  width: 350px;
}

#loader {
  color: #008cff;
  height: 40px;
  left: 45%;
  position: absolute;
  top: 45%;
  width: 30%;
}