How to set the file download location for chrome extension Using JavaScript?

Question

Hi i am downloading selected links using chrome extension but I can\'t set downloads location. All the urls downloaded to default location of chrome. i know we can\'t do it

Answer 1

Since you are generating and downloading just one ZIP file, you can use the chrome.downloads.download() method. E.g.:

var content = zip.generate();
var zipName = 'download.zip';
var dataURL = 'data:application/zip;base64,' + content;
chrome.downloads.download({
    url:      dataURL,
    filename: zipName,
    saveAs:   true
});
count = 0;

---

If you omit the display of a SaveAs dialog, then you can only specify a file name that is inside the user-defined download folder or in a subfolder of it.

---

Regarding the issue with the popup (see comment below): You should call the function from your background-page, not the popup. E.g. you could use chrome.runtime.sendMessage/onMessage to pass a message to your background-page:

In background.js:

...
function zipAndSaveFiles(...) { ... }
chrome.runtime.onMessage.addListener(function(msg, sender) {
    if ((msg.action === 'zipAndSave')
            && (msg.params !== undefined)) {
        zipAndSaveFiles(msg.params);
    }
});

In popup.js:

...
chrome.runtime.sendMessage({
    action: 'zipAndSave',
    params: ['url1', 'url2', 'url3']
});