Make a download button using Reactjs

by vsasikalabe Updated: Jan 24, 2023

On click of the button, call the download API for the file which needs to be downloaded as a BLOB. Create url out of the blob and store the object downloaded in the browser memory. Click the hidden anchor tag programatically which links to the above generated url.The appendChild() is a method of the Node interface. The appendChild() method allows you to add a node to the end of the list of child nodes of a specified parent node. In this method, the childNode is the node to append to the given parent node. The appendChild() returns the appended child.The URL revokeObjectURL() method releases an existing object URL which was created by using URL createObjectURL(). This method is called when you are finished using an object URL and don't want the browser to keep the reference to that file any longer.SVG images can be written directly into the HTML document using the <svg> </svg> tag. To do this, open the SVG image in VS code or your preferred IDE, copy the code, and paste it inside the <body> element in your HTML document.

Preview of the output that you will get on running this code from your IDE.

Code:

In this solution we use the React library.

HTML, react.js how to make a download button to download HTML page content?

JavaScriptLines of Code : 38License : CC BY-SA 4.0

function downloadBlob(blob, filename) {
  const objectUrl = URL.createObjectURL(blob);

  const link = document.createElement("a");
  link.href = objectUrl;
  link.download = filename;
  document.body.appendChild(link);
  link.click();
  document.body.removeChild(link);

  setTimeout(() => URL.revokeObjectURL(objectUrl), 5000);
}

export function MyComponent() {
  const svgRef = useRef();

  const downloadSVG = useCallback(() => {
    const svg = svgRef.current.innerHTML;
    const blob = new Blob([svg], { type: "image/svg+xml" });
    downloadBlob(blob, `myimage.svg`);
  }, []);

  return (
    <div className="App">

      <div ref={svgRef}>
        <svg>
          {/* svg or react component generating svg */}
        </svg>
      </div>

      <div>
        <button onClick={downloadSVG}>Download</button>
      </div>
    </div>
  );
}

Instructions

Follow the steps carefully to get the output easily.

Install the Node.js and React on your IDE(preferable Visual Studio Code).
Create React Application using npx create-react-app foldername.
cd foldername
npm i @babel/runtime
Open the folder in IDE.
Copy the code using "copy" button above and paste it in App.js file and also add path and size of the image within the svg tag.(remove the earlier code from App.js).
import { useCallback, useRef } from "react"
Refer DEMO for additional files.
Open the terminal from IDE.
npm start to run the file.

You can also refer this url DEMO for getting the above output.

I hope you found this useful. I have added the link to dependent libraries, version information in the following sections.

I found this code snippet by searching for Make a download button using Reactjs in kandi. You can try any such use case!

Environment Tested

I tested this solution in the following versions. Be mindful of changes when working with other versions.

The solution is created in VS Code 1.73.1 version.
The solution is tested on Nodejs 16.14.2 version.
react 18.2.0 version.
@babel/runtime: 7.20.6 version.

Using this solution, we are able to make a download button using Reactjs with simple steps. This process also facilities an easy way to use, hassle-free method to create a hands-on working version of code which would help us to make a download button using Reactjs.