​

// Click in the output, and perform a keyboard paste.

// You will get a 'paste' alert.

​

// Perform a keyboard paste with the shift key held down.

// In Chrome, you will see the 'paste' alert.

// In Firefox, you will NOT see the alert.

​

​

['cut', 'copy', 'paste'].forEach(function(event) {

    document.addEventListener(event, function(e) {

        alert(event);

    });

});