Getting started in EJ2 TypeScript Signature control
7 May 20255 minutes to read
This section explains how to create a simple Signature, and configure its available functionalities in TypeScript using Essential® JS 2 quickstart seed repository.
Dependencies
The following list of dependencies are required to use the Signature component in your application.
|-- @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 Signature component, need to import inputs and its dependent components styles as given below in the ~/src/styles/styles.css
file, as shown below:
@import "../../node_modules/@syncfusion/ej2-base/styles/material.css";
Adding Signature component to the application
Add the HTML Canvas tag with the id
attribute as signature
to your index.html
file.
[src/index.html]
<!DOCTYPE html>
<html lang="en">
<head>
<title>Essential JS 2 - Signature</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 - Signature" />
<meta name="author" content="Syncfusion" />
<link rel="shortcut icon" href="resources/favicon.ico" />
</head>
<body>
<div id="signature-control">
<canvas id="signature"></canvas>
</div>
</body>
</html>
Import the Signature component in your app.ts
file and initialize it with the #signature
.
[src/app/app.ts]
import { Signature } from '@syncfusion/ej2-inputs';
// Initializes the ColorPicker component
let signature: Signature = new Signature({}, '#signature');
Run the application
Run the application in the browser using the following command:
npm start
The following example shows a basic Signature component.
import { Signature } from '@syncfusion/ej2-inputs';
// Initializes the ColorPicker component
let signature: Signature = new Signature({}, '#signature');
<!DOCTYPE html>
<html lang="en">
<head>
<title>EJ2 Signature</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta name="description" content="TypeScript Signature Component" />
<meta name="author" content="Syncfusion" />
<link href="styles.css" rel="stylesheet" />
<link href="https://cdn.syncfusion.com/ej2/29.2.4/ej2-base/styles/material.css" rel="stylesheet" />
<link href="https://cdn.syncfusion.com/ej2/29.2.4/ej2-inputs/styles/material.css" rel="stylesheet" />
<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'>
<h4>Sign here</h4>
<div id ="signature-control">
<canvas id="signature"></canvas>
</div>
</div>
</body>
</html>
#container {
visibility: hidden;
}
#loader {
color: #008cff;
font-family: 'Helvetica Neue','calibiri';
font-size: 14px;
height: 40px;
left: 45%;
position: absolute;
top: 45%;
width: 30%;
}
#signature {
border: 1px solid lightgray;
height: 100%;
width: 100%;
}
#signature-control {
height: 300px;
width: 550px;
}
The Signature control will render default height and width of canvas (300 * 150), when the Signature height and width are not specified.