keypress, ctrl+c (or some combo like that)

Another approach (no plugin needed) is to just use .ctrlKey property of the event object that gets passed in. It indicates if Ctrl was pressed at the time of the event, like this:

$(document).keypress("c",function(e) {
  if(e.ctrlKey)
    alert("Ctrl+C was pressed!!");
});

I am a little late to the party but here is my part

$(document).on('keydown', function ( e ) {
    // You may replace `c` with whatever key you want
    if ((e.metaKey || e.ctrlKey) && ( String.fromCharCode(e.which).toLowerCase() === 'c') ) {
        console.log( "You pressed CTRL + C" );
    }
});