Add js scrypt to existing QR reader page to copy data to clipboard and automaticly go to url

Source code: [login to view URL] We need to get 3 scenarios of QR code scanning on our site: (any kind of control could be used to switch scenarios) 1. Scenario . It is used for cases when QR code includes web address. The website with the decoded address must be just opened on a screen. After QR with url is scanned - we need to go on that url automatic, 2. Scenario After QR is scanned - the decoded data must be copied to clipboard The success notification must be shown to user after data has been copied to clipboard. QR data, 3. After QR is scanned - certain (n) amount of characters from QR data has to be copied to clipboard. “n”- is amount of symbols counting from the end of the line value of “n” could be appointed inside of the code (after what could be changed manually by admin) (or could be taken from current page address as internal parameter of url) Example of scanner url page with parameter: https:/qrscanner.com/scan_page3&symb_amount=10