//禁用右键、文本选择功能、复制按键 $(document).bind(“contextmenu”,function(){return false;}); $(document).bind(“selectstart”,function(){return false;}); $(document).keydown(function(){return key(arguments[0])}); //按键时提示警告 function key(e){ var keynum; if(window.event){ keynum = e.keyCode; // IE }else if(e.which){ keynum = e.which; // Netscape/Firefox/Opera } if(keynum == 17){ alert(“禁止复制内容！”); return false; } } //禁用右键、文本选择功能、复制按键     $(document).bind("contextmenu",function(){return false;});     $(document).bind("selectstart",function(){return false;});     $(document).keydown(function(){return key(arguments[0])});  //按键时提示警告        function key(e){             var keynum;             if(window.event) // IE               {                 keynum = e.keyCode;               }             else if(e.which) // Netscape/Firefox/Opera               {                 keynum = e.which;               }             if(keynum == 17){ alert("禁止复制内容！");return false;}         } <script>  //屏蔽鼠标右键、Ctrl+N、Shift+F10、F11、F5刷新、退格键     function   document.oncontextmenu(){event.returnValue=false;}//屏蔽鼠标右键   function   window.onhelp(){return false}       //屏蔽F1帮助   function   document.onkeydown(){       if((window.event.altKey)&&         ((window.event.keyCode==37)||            //屏蔽Alt+方向键←         (window.event.keyCode==39))){            //屏蔽Alt+方向键→            alert("不准你使用ALT+方向键前进或后退网页！");              event.returnValue=false;          }         if((event.keyCode==8)||                    //屏蔽退格删除键          (event.keyCode==116)||                   //屏蔽F5刷新键         (event.ctrlKey && event.keyCode==82)){   //Ctrl+R              event.keyCode=0;              event.returnValue=false;         }         if(event.keyCode==122){event.keyCode=0;event.returnValue=false;}    //屏蔽F11         if(event.ctrlKey && event.keyCode==78)event.returnValue=false;      //屏蔽Ctrl+n         if(event.shiftKey && event.keyCode==121)event.returnValue=false;    //屏蔽shift+F10         if(window.event.srcElement.tagName=="A" && window.event.shiftKey)              window.event.returnValue=false;       //屏蔽shift加鼠标左键新开一网页         if((window.event.altKey)&&(window.event.keyCode==115)){             //屏蔽Alt+F4             window.showModelessDialog("about:blank","","dialogWidth:1px;dialogheight:1px");            return false;         }     }   </script>