1function download(filename, text) {
2  var element = document.createElement('a');
3  element.setAttribute('href', 'data:text/plain;charset=utf-8,' + encodeURIComponent(text));
4  element.setAttribute('download', filename);
5
6  element.style.display = 'none';
7  document.body.appendChild(element);
8
9  element.click();
10
11  document.body.removeChild(element);
12}
13
14// Start file download.
15download("hello.txt","This is the content of my file :)");
16

1browser.downloads.download({url: "https://example.org/image.png"})

1function download(link) {
2  var element = document.createElement('a');
3  element.setAttribute('href', link);
4
5  element.style.display = 'none';
6  document.body.appendChild(element);
7
8  element.click();
9
10  document.body.removeChild(element);
11}

1const fs = require('fs');
2const https = require('https');
3  
4// URL of the image
5const url = 'GFG.jpeg';
6  
7https.get(url,(res) => {
8    // Image will be stored at this path
9    const path = `${__dirname}/files/img.jpeg`; 
10    const filePath = fs.createWriteStream(path);
11    res.pipe(filePath);
12    filePath.on('finish',() => {
13        filePath.close();
14        console.log('Download Completed'); 
15    })
16})

1$('a#someID').attr({target: '_blank', 
2                    href  : 'http://localhost/directory/file.pdf'});

1<iframe id="download_iframe" style="display:none;"></iframe>
2<script>
3	document.getElementById('download_iframe').src = "/example/example.txt";
4</script>
5
6