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download()

The download() function enables you to download any data as a file, leveraging the capabilities of the downloadjs library.

Signature​

download(data: any, fileName: string, fileType?: string): Promise

Parameters​

data​

The Blob, File, String, or dataURL containing the soon-to-be File's contents

fileName​

Name of the file to be downloaded

fileType​

The MIME content-type of the file to download.

Supported file types:

  • Plain text
  • HTML
  • CSV
  • JSON
  • JPEG
  • PNG
  • SVG
info

The Download action doesn't convert the file to a specific type and it's downloaded in the original format. If you need to change the file type, you would need to convert the data to a specific format using JavaScript before downloading.

Example 1:

If you want to download a plain text document, the data passed to the download action should be a string representation of the text content to be downloaded. Additionally, a fileName and an optional fileType should be provided as parameters to the download function.

download(data: string, fileName: string, fileType?: string): void

Example 2:

To download an image, the data passed to the download action should be the image's URL or Base64 string representation of the image. A fileName and an optional fileType should be provided as parameters to the download function.

Example 3:

Files of various types can be downloaded using the download action by providing the URL of the file to be downloaded. Below code snippet demonstrates how to download any file from a URL using JS Object.

downloadPDF: async () => {
	let data = getPdf.data
	const blob = new Blob([data], {type: 'application/pdf'});
	const url = URL.createObjectURL(blob);
	await download(url, "sample.pdf", "application/pdf")
}

For files to be successfully downloaded, their contents must be served over HTTPS to prevent requests from being blocked. To prevent Cross-Origin Resource Sharing (CORS) errors, ensure that the server where the file is fetched from is CORS-enabled and returns the required headers in the response.

See also​