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ReactJS Blueprint ResizeSensor Component

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  • Last Updated : 08 Apr, 2022
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BlueprintJS is a React-based UI toolkit for the web. This library is very optimized and popular for building interfaces that are complex data-dense for desktop applications. ResizeSensor Component provides a way for users to provides them a resize event for its single DOM element child. We can use the following approach in ReactJS to use the ReactJS Blueprint ResizeSensor Component.

ResizeSensor Props:

  • observeParents: It is used to indicate that all parent DOM elements of the container will also be observed for size changes if this is set to true.
  • onResize: It is a callback that is triggered when the wrapped element resizes.

Creating React Application And Installing Module:

  • Step 1: Create a React application using the following command:

    npx create-react-app foldername
  •  

  • Step 2: After creating your project folder i.e. foldername, move to it using the following command:

    cd foldername
  • Step 3: After creating the ReactJS application, Install the required module using the following command:

    npm install @blueprintjs/core

Project Structure: It will look like the following.

Project Structure

Example: Now write down the following code in the App.js file. Here, App is our default component where we have written our code.

App.js




import React from 'react'
import '@blueprintjs/core/lib/css/blueprint.css';
import { ResizeSensor } from "@blueprintjs/core";
  
function App() {
  
    return (
        <div style={{
            display: 'block', width: 400, padding: 30
        }}>
            <h4>ReactJS Blueprint ResizeSensor Component</h4>
            <ResizeSensor onResize={(entries) =>
                console.log(entries.map(e => 
        `${e.contentRect.width} x ${e.contentRect.height}`))}>
                <div style={{ width: 300, 
                    backgroundColor: 'green', height: 50 }}>
                    Size: 300 X 50
                </div>
            </ResizeSensor>
        </div >
    );
}
  
export default App;

Step to Run Application: Run the application using the following command from the root directory of the project:

npm start

Output: Now open your browser and go to http://localhost:3000/, you will see the following output:

Reference: https://blueprintjs.com/docs/#core/components/resize-sensor

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