To download files from a URL in Node.js, you can use the node-downloader-helper library. It is a node module that helps in downloading large files over HTTP(S) protocol. It provides various options such as progress reporting, pausing and resuming the downloads, and more.
Here are the steps to use the node-downloader-helper library to download files from a URL in Node.js:
- Install the
node-downloader-helperlibrary:
npm install node-downloader-helper --save- Require the
DownloaderHelperclass from thenode-downloader-helpermodule:
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const DownloaderHelper = require('node-downloader-helper'); |
- Create a new instance of the
DownloaderHelperclass with the URL of the file to download:
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const download = new DownloaderHelper('http://example.com/file.zip', __dirname); |
Here, the first argument is the URL of the file to download, and the second argument is the directory where the downloaded file will be saved.
- Register event listeners to get the progress and status of the download:
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download.on('progress', stats => { console.log('Downloaded', stats.downloaded, 'bytes'); }); download.on('end', () => { console.log('Download complete'); }); download.on('error', err => { console.error('Download failed', err); }); |
Here, the progress event is emitted every time a chunk of data is downloaded, and the end event is emitted when the download is complete. The error event is emitted if there is an error during the download.
- Start the download using the
startmethod:
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download.start(); |
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const DownloaderHelper = require('node-downloader-helper'); const download = new DownloaderHelper('http://example.com/file.zip', __dirname); download.on('progress', stats => { console.log('Downloaded', stats.downloaded, 'bytes'); }); download.on('end', () => { console.log('Download complete'); }); download.on('error', err => { console.error('Download failed', err); }); download.start(); |
