react test lesson

React PDF" can refer to two main functionalities within
the React ecosystem: 

• Displaying
  PDF documents within a React application:




• This
  is achieved using libraries like react-pdf by Wojciech Maj.


• It
  allows you to embed and render PDF files directly in your web
  application, offering features like page navigation, zooming, text layer
  for accessibility, and more.


• You
  install it using npm install react-pdf or yarn add
  react-pdf.


• Basic
  usage involves the Document and Page components:

Code

    import { Document,
Page } from 'react-pdf';

    import { pdfjs } from 'react-pdf';



    // Set up the worker source for
react-pdf

    pdfjs.GlobalWorkerOptions.workerSrc =
`//unpkg.com/pdfjs-dist@${pdfjs.version}/build/pdf.worker.min.mjs`;



    function MyPdfViewer() {

      const pdfFile =
"your-document.pdf"; // Can be a URL, base64 string, etc.



      return (

        <Document file={pdfFile}>

          <Page pageNumber={1} />
{/* Render the first page */}

        </Document>

      );

    }

• Generating
  PDF documents from React components:




• This
  is accomplished using @react-pdf/renderer.


• It
  allows you to define the structure and content of your PDF using React
  components (e.g., Document, Page, View, Text, Image, Link).


• You
  can then render these components into a PDF, either in the browser (for
  download) or on the server.


• Installation: npm
  install @react-pdf/renderer or yarn add @react-pdf/renderer. 


• Example
  of generating a PDF:

Code

    import React from
'react';

    import { Document, Page, Text, View,
StyleSheet, pdf } from '@react-pdf/renderer';



    const styles = StyleSheet.create({

      page: { flexDirection: 'row',
backgroundColor: '#E4E4E4' },

      section: { margin: 10, padding: 10,
flexGrow: 1 },

    });



    const MyDocument = () => (

      <Document>

        <Page size="A4"
style={styles.page}>

          <View
style={styles.section}>

            <Text>Hello from React
PDF!</Text>

          </View>

        </Page>

      </Document>

    );



    // To generate and download the PDF
in the browser:

    // pdf(<MyDocument
/>).toBlob().then(blob => {

    //  
const url = URL.createObjectURL(blob);

    //  
const a = document.createElement('a');

    //  
a.href = url;

    //  
a.download = 'my-document.pdf';

    //  
a.click();

    // });