There's a clipboard API [1] in newest browsers but browser support varies. Regarding cross-domain, what do you want to do exactly? In general there's no built-

There's a clipboard API [1] in newest browsers but browser support varies. Regarding cross-domain, what do you want to do exactly? In general there's no built-in support at least in Firefox to override default same-origin policy, but there are Chrome/Firefox extensions that for instance inject CORS headers to each response. Edit: In Chrome, it seems you can disable same-origin policy with command line flag [2] [1] http://caniuse.com/#feat=clipboard http://caniuse.com/#feat=clipboard [2] http://stackoverflow.com/a/3177718/245966 http://stackoverflow.com/a/3177718/245966