JavaScript屏蔽右键F12和Ctrl+U等绝大部分按键

<script type="text/javascript">
	//屏蔽右键菜单
	document.oncontextmenu = function (event) {
		if (window.event) {
			event = window.event;
		}
		try {
			var the = event.srcElement;
			if (!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")) {
				return false;
			}
			return true;
		} catch (e) {
			return false;
		}
	};
	//屏蔽粘贴
	document.onpaste = function (event) {
		if (window.event) {
			event = window.event;
		}
		try {
			var the = event.srcElement;
			if (!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")) {
				return false;
			}
			return true;
		} catch (e) {
			return false;
		}
	};
	//屏蔽复制

	//屏蔽剪切
	document.oncut = function (event) {
		if (window.event) {
			event = window.event;
		}
		try {
			var the = event.srcElement;
			if (!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")) {
				return false;
			}
			return true;
		} catch (e) {
			return false;
		}
	};
	//禁止f12

	function fuckyou() {
		window.close(); //关闭当前窗口(防抽)
		window.location = "about:blank"; //将当前窗口跳转置空白页
	}
	//禁止Ctrl+U
	var arr = [123, 17, 18];
	(document.oncontextmenu = new Function("event.returnValue=false;")), //禁用右键
		(window.onkeydown = function (e) {
			var keyCode = e.keyCode || e.which || e.charCode;
			var ctrlKey = e.ctrlKey || e.metaKey;
			console.log(keyCode + "--" + keyCode);
			if (ctrlKey && keyCode == 85) {
				e.preventDefault();
			}
			if (arr.indexOf(keyCode) > -1) {
				e.preventDefault();
			}
		});

	function ck() {
		console.profile();
		console.profileEnd();
		//我们判断一下profiles里面有没有东西，如果有，肯定有人按F12了，没错！！
		if (console.clear) {
			console.clear();
		}
		if (typeof console.profiles == "object") {
			return console.profiles.length;
		}
	}

	function hehe() {
		if ((window.console && (console.firebug || (console.table && /firebug/i.test(console.table())))) || (typeof opera == "object" && typeof opera.postError == "function" && console.profile.length)) {
			fuckyou();
		}
		if (typeof console.profiles == "object" && console.profiles.length) {
			fuckyou();
		}
	}
	hehe();
	window.onresize = function () {
		if (window.outerHeight - window.innerHeight > 200)
			//判断当前窗口内页高度和窗口高度，如果差值大于200，那么呵呵
			fuckyou();
	};

	document.onkeydown = function (event) {
		if (
			event.keyCode == 112 || //屏蔽 F1
			event.keyCode == 113 || //屏蔽 F2
			event.keyCode == 114 || //屏蔽 F3
			event.keyCode == 115 || //屏蔽 F4
			// (event.keyCode == 116) || //屏蔽 F5
			event.keyCode == 117 || //屏蔽 F6
			event.keyCode == 118 || //屏蔽 F7
			event.keyCode == 119 || //屏蔽 F8
			event.keyCode == 120 || //屏蔽 F9
			event.keyCode == 121 || //屏蔽 F10
			event.keyCode == 122 || //屏蔽 F11
			event.keyCode == 123
		) {
			//屏蔽 F12
			return false;
		}
	};
	window.onhelp = function () {
		return false;
	};
</script>