jQuery交集选择器实现注册、登陆、找回密码

三个窗口组件

<div class="position-relative">
    <div id="login-box" class="login-box visible widget-box no-border">
        <div class="widget-body">
            <div class="widget-main">
                <h4 class="header blue lighter bigger">
                    <i class="ace-icon fa fa-coffee green"></i> Please Enter Your Information
                </h4>

                <div class="space-6"></div>

                <form>
                    <fieldset>
                        <label class="block clearfix">
                                <span class="block input-icon input-icon-right">
                                    <input type="text" class="form-control" placeholder="Username" />
                                    <i class="ace-icon fa fa-user"></i>
                                </span>
                            </label>

                        <label class="block clearfix">
                                <span class="block input-icon input-icon-right">
                                    <input type="password" class="form-control" placeholder="Password" />
                                    <i class="ace-icon fa fa-lock"></i>
                                </span>
                            </label>

                        <div class="space"></div>

                        <div class="clearfix">
                            <label class="inline">
                                    <input type="checkbox" class="ace" />
                                    <span class="lbl"> Remember Me</span>
                                </label>

                            <button type="button" class="width-35 pull-right btn btn-sm btn-primary">
                                    <i class="ace-icon fa fa-key"></i>
                                    <span class="bigger-110">Login</span>
                                </button>
                        </div>

                        <div class="space-4"></div>
                    </fieldset>
                </form>

                <div class="social-or-login center">
                    <span class="bigger-110">Or Login Using</span>
                </div>

                <div class="space-6"></div>

                <div class="social-login center">
                    <a class="btn btn-primary">
                        <i class="ace-icon fa fa-facebook"></i>
                    </a>

                    <a class="btn btn-info">
                        <i class="ace-icon fa fa-twitter"></i>
                    </a>

                    <a class="btn btn-danger">
                        <i class="ace-icon fa fa-google-plus"></i>
                    </a>
                </div>
            </div>
            <!-- /.widget-main -->

            <div class="toolbar clearfix">
                <div>
                    <a href="#" data-target="#forgot-box" class="forgot-password-link">
                        <i class="ace-icon fa fa-arrow-left"></i> I forgot my password
                    </a>
                </div>

                <div>
                    <a href="#" data-target="#signup-box" class="user-signup-link">
                            I want to register
                            <i class="ace-icon fa fa-arrow-right"></i>
                        </a>
                </div>
            </div>
        </div>
        <!-- /.widget-body -->
    </div>
    <!-- /.login-box -->

    <div id="forgot-box" class="forgot-box widget-box no-border">
        <div class="widget-body">
            <div class="widget-main">
                <h4 class="header red lighter bigger">
                    <i class="ace-icon fa fa-key"></i> Retrieve Password
                </h4>

                <div class="space-6"></div>
                <p>
                    Enter your email and to receive instructions
                </p>

                <form>
                    <fieldset>
                        <label class="block clearfix">
                                <span class="block input-icon input-icon-right">
                                    <input type="email" class="form-control" placeholder="Email" />
                                    <i class="ace-icon fa fa-envelope"></i>
                                </span>
                            </label>

                        <div class="clearfix">
                            <button type="button" class="width-35 pull-right btn btn-sm btn-danger">
                                    <i class="ace-icon fa fa-lightbulb-o"></i>
                                    <span class="bigger-110">Send Me!</span>
                                </button>
                        </div>
                    </fieldset>
                </form>
            </div>
            <!-- /.widget-main -->

            <div class="toolbar center">
                <a href="#" data-target="#login-box" class="back-to-login-link">
                        Back to login
                        <i class="ace-icon fa fa-arrow-right"></i>
                    </a>
            </div>
        </div>
        <!-- /.widget-body -->
    </div>
    <!-- /.forgot-box -->

    <div id="signup-box" class="signup-box widget-box no-border">
        <div class="widget-body">
            <div class="widget-main">
                <h4 class="header green lighter bigger">
                    <i class="ace-icon fa fa-users blue"></i> New User Registration
                </h4>

                <div class="space-6"></div>
                <p> Enter your details to begin: </p>

                <form>
                    <fieldset>
                        <label class="block clearfix">
                                <span class="block input-icon input-icon-right">
                                    <input type="email" class="form-control" placeholder="Email" />
                                    <i class="ace-icon fa fa-envelope"></i>
                                </span>
                            </label>

                        <label class="block clearfix">
                                <span class="block input-icon input-icon-right">
                                    <input type="text" class="form-control" placeholder="Username" />
                                    <i class="ace-icon fa fa-user"></i>
                                </span>
                            </label>

                        <label class="block clearfix">
                                <span class="block input-icon input-icon-right">
                                    <input type="password" class="form-control" placeholder="Password" />
                                    <i class="ace-icon fa fa-lock"></i>
                                </span>
                            </label>

                        <label class="block clearfix">
                                <span class="block input-icon input-icon-right">
                                    <input type="password" class="form-control" placeholder="Repeat password" />
                                    <i class="ace-icon fa fa-retweet"></i>
                                </span>
                            </label>

                        <label class="block">
                                <input type="checkbox" class="ace" />
                                <span class="lbl">
                                    I accept the
                                    <a href="#">User Agreement</a>
                                </span>
                            </label>

                        <div class="space-24"></div>

                        <div class="clearfix">
                            <button type="reset" class="width-30 pull-left btn btn-sm">
                                    <i class="ace-icon fa fa-refresh"></i>
                                    <span class="bigger-110">Reset</span>
                                </button>

                            <button type="button" class="width-65 pull-right btn btn-sm btn-success">
                                    <span class="bigger-110">Register</span>

                                    <i class="ace-icon fa fa-arrow-right icon-on-right"></i>
                                </button>
                        </div>
                    </fieldset>
                </form>
            </div>

            <div class="toolbar center">
                <a href="#" data-target="#login-box" class="back-to-login-link">
                    <i class="ace-icon fa fa-arrow-left"></i> Back to login
                </a>
            </div>
        </div>
        <!-- /.widget-body -->
    </div>
    <!-- /.signup-box -->
</div>
<!-- /.position-relative -->

jQuery代码

<script type="text/javascript">
    jQuery(function($) {
        $(document).on('click', '.toolbar a[data-target]', function(e) {
            e.preventDefault();
            console.log($(this));
            var target = $(this).data('target');
            $('.widget-box.visible').removeClass('visible'); //hide others
            $(target).addClass('visible'); //show target
        });
    });
</script>