html屏蔽鼠标右键

 <!doctype html>
 <html lang="en">
  <head>
   <meta charset="UTF-8">
   <meta name="Generator" content="EditPlus®">
   <meta name="Author" content="">
   <meta name="Keywords" content="">
   <meta name="Description" content="">
   <title>Document</title>
  </head>
  <body>
     <script type="text/javascript">
         document.oncontextmenu = function() {
              return false;
         }

          //  左键是1 滑轮是2 右键是3
         document.addEventListener("mousedown",function(e){
             alert(e.which);
         },false);

         // jquery 方式
         $(document).mousedown(function(e){
             var key = e.which;
             if(key == 3){
                 alert("这个事鼠标右键");
             }else{
                 alert(key);
             }
         });
     </script>
  </body>
 </html>