<script type="text/javascript">

        //禁用右键

        document.onkeydown = function() {

                var e = window.event || arguments[0];

                if (e.keyCode == 123) {

                    //    alert('禁止F12');

                    return false;

                } else if ((e.ctrlKey) && (e.shiftKey) && (e.keyCode == 73)) {

                    //    alert('禁止Ctrl+Shift+I');

                    return false;

                } else if ((e.ctrlKey) && (e.keyCode == 85)) {

                    //    alert('禁止Ctrl+u');

                    return false;

                } else if ((e.ctrlKey) && (e.keyCode == 83)) {

                    //    alert('禁止Ctrl+s');

                    return false;

                }

            }

            // 屏蔽鼠标右键

        document.oncontextmenu = function() {

            //alert('禁止右键');

            return false;

        }

    </script>

    <script type="text/javascript">

        ((function() {

            var callbacks = [],

                timeLimit = 50,

                open = false;

            setInterval(loop, 1);

            return {

                addListener: function(fn) {

                    callbacks.push(fn);

                },

                cancleListenr: function(fn) {

                    callbacks = callbacks.filter(function(v) {

                        return v !== fn;

                    });

                }

            }

            function loop() {

                var startTime = new Date();

                debugger;

                if (new Date() - startTime > timeLimit) {

                    if (!open) {

                        callbacks.forEach(function(fn) {

                            fn.call(null);

                        });

                    }

                    open = true;

                    window.stop();

                    alert('禁止查看');

                    window.location.reload();

                } else {

                    open = false;

                }

            }

        })())

        .addListener(function() {

            window.location.reload();

        });

        //禁止查看网页代码结束

    </script>