javascript - 简单的 JavaScript/Bootstrap 下拉问题

Question

基本上我有 3 个下拉菜单，我只需要一个处于事件状态，这样当我从中选择某些内容时，其余的也应该变得事件。所以到目前为止我所做的就是添加了禁用类，现在我让第一个类处于事件状态，而其余 3 个类则处于禁用状态。我的问题是 - 当我从第一个下拉列表中选择某些内容时如何使它们处于事件状态

 $(document).ready(function () {

        $('#Test #firstId .dropdown-menu li a').click(function () {
            var selText = $(this).text();
            $(this).parents('.btn-group').find('.dropdown-toggle').html(selText + ' <span class="caret"></span>')
        });

        $('#Test #secondId .dropdown-menu li a').click(function () {
            var selText = $(this).text();
            $(this).parents('.btn-group').find('.dropdown-toggle').html(selText + ' <span class="caret"></span>')
        });

        $('#Test #thirdId .dropdown-menu li a').click(function () {
            var selText = $(this).text();
            $(this).parents('.btn-group').find('.dropdown-toggle').html(selText + ' <span class="caret"></span>')
        });
        $('#Test #fourthId .dropdown-menu li a').click(function () {
            var selText = $(this).text();
            $(this).parents('.btn-group').find('.dropdown-toggle').html(selText + ' <span class="caret"></span>')
        });

    });

这是我的下拉菜单:

 <div class="btn-group" id="firstId">
                            <button class="btn btn-default dropdown-toggle" type="button"
                                    data-toggle="dropdown">
                                Store
                                <span class="caret"></span></button>
                            <ul class="dropdown-menu" role="menu" aria-labelledby="menu1">
                                <li role="presentation"><a role="menuitem" tabindex="-1" href="#">1</a></li>
                                <li role="presentation"><a role="menuitem" tabindex="-1" href="#">2</a></li>
                                <li role="presentation"><a role="menuitem" tabindex="-1" href="#">3</a>
                                </li>
                                <li role="presentation" class="divider"></li>
                                <li role="presentation"><a role="menuitem" tabindex="-1" href="#">About Us</a></li>
                            </ul>
                        </div>
                    </div>
                </div>
                <div class="col-md-3">
                    <div class="dropdown">
                        <div class="btn-group" id="secondId">
                            <button class="btn btn-default dropdown-toggle disabled" type="button"
                                    data-toggle="dropdown">
                                Catalog
                                <span class="caret"></span></button>
                            <ul class="dropdown-menu" role="menu" aria-labelledby="menu1">
                                <li role="presentation"><a role="menuitem" tabindex="-1" href="#">1</a></li>
                                <li role="presentation"><a role="menuitem" tabindex="-1" href="#">2</a></li>
                                <li role="presentation"><a role="menuitem" tabindex="-1" href="#">3</a>
                            </ul>
                        </div>
                    </div>
                </div>
                <div class="col-md-3">
                    <div class="dropdown">
                        <div class="btn-group" id="thirdId">
                            <button class="btn btn-default dropdown-toggle disabled" type="button"
                                    data-toggle="dropdown">
                                Categories
                                <span class="caret"></span></button>
                            <ul class="dropdown-menu" role="menu" aria-labelledby="menu1">
                                <li role="presentation"><a role="menuitem" tabindex="-1" href="#">1</a></li>
                                <li role="presentation"><a role="menuitem" tabindex="-1" href="#">2</a></li>
                                <li role="presentation"><a role="menuitem" tabindex="-1" href="#">3</a>
                                </li>
                                <li role="presentation" class="divider"></li>
                                <li role="presentation"><a role="menuitem" tabindex="-1" href="#">4</a></li>
                            </ul>
                        </div>
                    </div>
                </div>
                <div class="col-md-3">
                    <div class="dropdown">
                        <div class="btn-group" id="fourthId">
                            <button class="btn btn-default dropdown-toggle disabled" type="button"
                                    data-toggle="dropdown">
                                Products
                                <span class="caret"></span></button>
                            <ul class="dropdown-menu" role="menu" aria-labelledby="menu1">
                                <li role="presentation"><a role="menuitem" tabindex="-1" href="#">1</a></li>
                                <li role="presentation"><a role="menuitem" tabindex="-1" href="#">2</a></li>
                                <li role="presentation"><a role="menuitem" tabindex="-1" href="#">3</a>
                                </li>
                                <li role="presentation" class="divider"></li>
                                <li role="presentation"><a role="menuitem" tabindex="-1" href="#">4</a></li>
                            </ul>
                        </div>
                    </div>
                </div>
            </div>

Answer 1

JQUERY

 $('#firstId ul.dropdown-menu li').on('click',function(){
    $('.btn.btn-default.dropdown-toggle.disabled').removeClass('disabled');
    });

在firstId上选择查找所有禁用的类并删除禁用的类

JSFIDDLE DEMO