<script>
/*
*屏蔽 F5、Ctrl+N、Shift+F10、Alt+F4
*如果想要屏蔽其他键，则找到对应的 keyCode 再依照此方法即可
*/
document.onkeydown = function(event){
event = window.event || event;
if(event.keyCode==116 || (event.ctrlKey && event.keyCode==78) || (event.shiftKey && event.keyCode==121) || (event.altKey && event.keyCode==115)){
event.keyCode =0;
event.returnvalue = false;
}
}
/** 屏蔽鼠标右键 */
document.oncontextmenu = function(){return false;}
//或者
document.onmousedown = function(event){
event = window.event || event;
if(document.all && event.button == 2) {
event.returnvalue=false;
}
}
/** 屏蔽选中网页内容 */
document.onselectstart=function(){return false;}
/** 屏蔽复制网页内容 */
document.body.oncopy = function(){return false;}
/** 屏蔽剪切网页内容 */
document.body.oncut = function(){return false;}
/** 屏蔽向网页粘贴内容 */
document.body.onpaste = function(){return false;}
</script>
