I expect the UploadCare dialog to open after clicking MyButton, showing the Twitter logo, but it doesn't. Why not?
$('#MyButton').on('click', function() {
uploadcare.openDialog('https://g.twimg.com/About_logoUsage.png');
return false;
});
You need to pass a file
object as an argument to openDialog
method. You can obtain the file object by calling uploadcare.fileFrom method:
// Pre-load an image from arbitrary URL,
// and open Uploadcare file upload dialog
$('#MyButton').on('click', function() {
var file = uploadcare.fileFrom('url', 'https://g.twimg.com/About_logoUsage.png');
uploadcare.openDialog(file);
return false;
});