jquery监听ctrl + c 和 鼠标右键“复制”事件

<script type="text/javascript" src="jquery.min.js"></script>  
    <script type="text/javascript">  
  
        //  监听 ctrl + c事件  
        $(document).unbind('keydown').bind('keydown', function(e){   
            if(e.ctrlKey && e.keyCode  == 67) {   
                doSomething();  
                // 返回false, 防止重复触发copy事件  
                return false;  
            }  
        })  
          
        // 鼠标右键的复制事件  
        $(document).unbind('copy').bind('copy', function(e) {  
            setTime();  
            console.log('右键复制 监听成功');  
        });  
  
        function doSomething(){  
            setTime();  
            console.log('ctrl + c 监听成功');  
        }  
   
        function setTime(){  
            if(window.localStorage) {  
                let time = localStorage.getItem('time');  
                time ? time ++ : time = 1;  
                localStorage.setItem('time', time);  
            }  
        }  
  
    </script>