回答-BFW问答

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>BFW NEW PAGE</title>
    <script id="bfwone" data="dep=jquery.17&err=0" type="text/javascript" src="http://repo.bfw.wiki/bfwrepo/js/bfwone.js"></script>
    <script type="text/javascript">
        bready(function() {

            if (window.history && window.history.pushState) {

                $(window).on('popstate', function() {
                    var hashLocation = location.hash;
                    var hashSplit = hashLocation.split("#!/");
                    var hashName = hashSplit[1];

                    if (hashName !== '') {
                        var hash = window.location.hash;
                        if (hash === '') {
                            alert('您点了后退按钮');
                        }
                    }
                });

                window.history.pushState('forward',
                    null,
                    './#forward');
            }


        });
    </script>
    <style>
    </style>
</head>
<body>
    <div id="picker">
        颜色选择器
    </div>
</body>
</html>