屏蔽网页右键复制和ctrl+c复制的js代码

<script> 
document.oncontextmenu = function(){ 
return false; 
} 
document.onkeydown = function(){ 
if (event.ctrlKey && window.event.keyCode==67){ 
return false; 
} 
} 
document.body.oncopy = function (){ 
return false; 
} 
document.onselectstart = function(){ 
//return false; 
} 
</script>