jquery禁用右键、文本选择功能、复制按键的实现

//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;

}

}

//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;

}

}