AngularJs-在不禁用的情况下无法取消路线更改；展开菜单“；

图片：

Html:

// the ng-class allow the expansion of menu            
  <li class="{{menuItem.isActive}}" data-ng-repeat="menuItem in vm.menuItems" data-ng-class="{'': vm.expandedItem !== menuItem, 'expanded': vm.expandedItem === menuItem}" data-ng-click="vm.expandNav(menuItem, menuItem.url)"  style="cursor: pointer;">

  // click to go to next route
   <a href="{{menuItem.url}}">                     
      <span class="menu-item-parent">{{menuItem.name}}</span>
        <b data-ng-if="menuItem.subMenu.length > 0 ">
          <em class="fa" data-ng-class="{'fa fa-expand-o': vm.expandedItem !== menuItem, 'fa fa-collapse-o': vm.expandedItem === menuItem}">
                    </em>
                </b>
            </a>   

    vm.expandNav = function (item, url) {
        if (url == '') {
            if (item !== vm.expandedItem) {
                vm.expandedItem = item;
            } else {
                vm.expandedItem = null;
            }
        }
    };

    vm.menuItems = [
          { name: "Dashboard", url: "/", icon: "fa-home", isActive: "active" },
          { name: "Inbox", url: "/inserts/inbox", icon: "fa-inbox" },
          { name: "Graphs", url: "#", icon: "fa-bar-chart-o",
              subMenu:
                  [
                      { name: "Flot Charts", url: "/inserts/flot" },
                      { name: "Morris Charts", url: "/inserts/morris" },
                      { name: "Inline Charts", url: "/inserts/inline-charts" }
                  ]
          }

        .otherwise({
            templateUrl: '/app/html/inserts/dashboard.html',
            controller: 'RouteCtrl'
        });

    vm.expandNav = function (item, url) {
        if (url === '#') {
            event.preventDefault();

            if (item !== vm.expandedItem) {
                vm.expandedItem = item;
            } else {
                vm.expandedItem = null;
            }
        }
    };

    <ul>
        <li class="{{menuItem.isActive}}" data-ng-repeat="menuItem in vm.menuItems" data-ng-class="{'': vm.expandedItem !== menuItem, 'expanded': vm.expandedItem === menuItem}" data-ng-click="vm.expandNav(menuItem, menuItem.url)" style="cursor: pointer;">
            <a ng-href="{{menuItem.url}}">
                <i class="fa fa-lg fa-fw {{menuItem.icon}}"></i>
                <span class="menu-item-parent">{{menuItem.name}}</span>
                <b data-ng-if="menuItem.subMenu.length > 0 ">
                    <em class="fa" data-ng-class="{'fa fa-expand-o': vm.expandedItem !== menuItem, 'fa fa-collapse-o': vm.expandedItem === menuItem}">
                    </em>
                </b>
            </a>
            <ul data-ng-class="{'expanded': vm.expandedItem !== menuItem, 'expanded expandMe': vm.expandedItem === menuItem}" data-ng-click="vm.expandNav(menuItem, menuItem.url)">
                <li data-ng-repeat="subMenu in menuItem.subMenu">
                    <a ng-href="{{subMenu.url}}" style="cursor: pointer;">{{subMenu.name}}</a>
                </li>
            </ul>
        </li>
    </ul>

一些数据：

// the ng-class allow the expansion of menu            
  <li class="{{menuItem.isActive}}" data-ng-repeat="menuItem in vm.menuItems" data-ng-class="{'': vm.expandedItem !== menuItem, 'expanded': vm.expandedItem === menuItem}" data-ng-click="vm.expandNav(menuItem, menuItem.url)"  style="cursor: pointer;">

  // click to go to next route
   <a href="{{menuItem.url}}">                     
      <span class="menu-item-parent">{{menuItem.name}}</span>
        <b data-ng-if="menuItem.subMenu.length > 0 ">
          <em class="fa" data-ng-class="{'fa fa-expand-o': vm.expandedItem !== menuItem, 'fa fa-collapse-o': vm.expandedItem === menuItem}">
                    </em>
                </b>
            </a>   

    vm.expandNav = function (item, url) {
        if (url == '') {
            if (item !== vm.expandedItem) {
                vm.expandedItem = item;
            } else {
                vm.expandedItem = null;
            }
        }
    };

    vm.menuItems = [
          { name: "Dashboard", url: "/", icon: "fa-home", isActive: "active" },
          { name: "Inbox", url: "/inserts/inbox", icon: "fa-inbox" },
          { name: "Graphs", url: "#", icon: "fa-bar-chart-o",
              subMenu:
                  [
                      { name: "Flot Charts", url: "/inserts/flot" },
                      { name: "Morris Charts", url: "/inserts/morris" },
                      { name: "Inline Charts", url: "/inserts/inline-charts" }
                  ]
          }

        .otherwise({
            templateUrl: '/app/html/inserts/dashboard.html',
            controller: 'RouteCtrl'
        });

    vm.expandNav = function (item, url) {
        if (url === '#') {
            event.preventDefault();

            if (item !== vm.expandedItem) {
                vm.expandedItem = item;
            } else {
                vm.expandedItem = null;
            }
        }
    };

    <ul>
        <li class="{{menuItem.isActive}}" data-ng-repeat="menuItem in vm.menuItems" data-ng-class="{'': vm.expandedItem !== menuItem, 'expanded': vm.expandedItem === menuItem}" data-ng-click="vm.expandNav(menuItem, menuItem.url)" style="cursor: pointer;">
            <a ng-href="{{menuItem.url}}">
                <i class="fa fa-lg fa-fw {{menuItem.icon}}"></i>
                <span class="menu-item-parent">{{menuItem.name}}</span>
                <b data-ng-if="menuItem.subMenu.length > 0 ">
                    <em class="fa" data-ng-class="{'fa fa-expand-o': vm.expandedItem !== menuItem, 'fa fa-collapse-o': vm.expandedItem === menuItem}">
                    </em>
                </b>
            </a>
            <ul data-ng-class="{'expanded': vm.expandedItem !== menuItem, 'expanded expandMe': vm.expandedItem === menuItem}" data-ng-click="vm.expandNav(menuItem, menuItem.url)">
                <li data-ng-repeat="subMenu in menuItem.subMenu">
                    <a ng-href="{{subMenu.url}}" style="cursor: pointer;">{{subMenu.name}}</a>
                </li>
            </ul>
        </li>
    </ul>

路由提供商“否则”操作：

// the ng-class allow the expansion of menu            
  <li class="{{menuItem.isActive}}" data-ng-repeat="menuItem in vm.menuItems" data-ng-class="{'': vm.expandedItem !== menuItem, 'expanded': vm.expandedItem === menuItem}" data-ng-click="vm.expandNav(menuItem, menuItem.url)"  style="cursor: pointer;">

  // click to go to next route
   <a href="{{menuItem.url}}">                     
      <span class="menu-item-parent">{{menuItem.name}}</span>
        <b data-ng-if="menuItem.subMenu.length > 0 ">
          <em class="fa" data-ng-class="{'fa fa-expand-o': vm.expandedItem !== menuItem, 'fa fa-collapse-o': vm.expandedItem === menuItem}">
                    </em>
                </b>
            </a>   

    vm.expandNav = function (item, url) {
        if (url == '') {
            if (item !== vm.expandedItem) {
                vm.expandedItem = item;
            } else {
                vm.expandedItem = null;
            }
        }
    };

    vm.menuItems = [
          { name: "Dashboard", url: "/", icon: "fa-home", isActive: "active" },
          { name: "Inbox", url: "/inserts/inbox", icon: "fa-inbox" },
          { name: "Graphs", url: "#", icon: "fa-bar-chart-o",
              subMenu:
                  [
                      { name: "Flot Charts", url: "/inserts/flot" },
                      { name: "Morris Charts", url: "/inserts/morris" },
                      { name: "Inline Charts", url: "/inserts/inline-charts" }
                  ]
          }

        .otherwise({
            templateUrl: '/app/html/inserts/dashboard.html',
            controller: 'RouteCtrl'
        });

    vm.expandNav = function (item, url) {
        if (url === '#') {
            event.preventDefault();

            if (item !== vm.expandedItem) {
                vm.expandedItem = item;
            } else {
                vm.expandedItem = null;
            }
        }
    };

    <ul>
        <li class="{{menuItem.isActive}}" data-ng-repeat="menuItem in vm.menuItems" data-ng-class="{'': vm.expandedItem !== menuItem, 'expanded': vm.expandedItem === menuItem}" data-ng-click="vm.expandNav(menuItem, menuItem.url)" style="cursor: pointer;">
            <a ng-href="{{menuItem.url}}">
                <i class="fa fa-lg fa-fw {{menuItem.icon}}"></i>
                <span class="menu-item-parent">{{menuItem.name}}</span>
                <b data-ng-if="menuItem.subMenu.length > 0 ">
                    <em class="fa" data-ng-class="{'fa fa-expand-o': vm.expandedItem !== menuItem, 'fa fa-collapse-o': vm.expandedItem === menuItem}">
                    </em>
                </b>
            </a>
            <ul data-ng-class="{'expanded': vm.expandedItem !== menuItem, 'expanded expandMe': vm.expandedItem === menuItem}" data-ng-click="vm.expandNav(menuItem, menuItem.url)">
                <li data-ng-repeat="subMenu in menuItem.subMenu">
                    <a ng-href="{{subMenu.url}}" style="cursor: pointer;">{{subMenu.name}}</a>
                </li>
            </ul>
        </li>
    </ul>

场景[问题：

我在“收件箱”页面上，单击“图形”菜单，在单击某个选项之前，我的视图将恢复为默认的仪表板页面

我试图用$locationChangeStart阻止默认设置，但这会阻止菜单扩展，以便我可以看到子菜单

我想要的：要保留在我单击的任何页面（在本例中为收件箱页面），请单击任何其他具有子菜单（如图形）的菜单项，并且不要让我的视图从当前打开的收件箱视图中移出

---

提前感谢

听起来您可能试图取消Bubble而不是preventDefault，但最好将expand元素移出锚定，以避免指令/事件冲突。那可能吗？

我发现有几个问题。首先，它看起来像是在

vm.expandNav

中检查错误的url值。您正在检查url是否为空，但图形url是否设置为

“#”

其次，您需要在检查成功后阻止默认设置

vm.expandNav = function (item, url) {
  if (url === '#') {
    event.preventDefault();

    if (item !== vm.expandedItem) {
      vm.expandedItem = item;
    } else {
      vm.expandedItem = null;
    }
  }
};

event.preventDefault（）

告诉子

a

标记它不应该访问它的

href

。否则，您的单击事件将运行，但单击将继续向下级联，并将您的浏览器发送到

http://

。这就是现在发生的事情，也是为什么你的

或者
会将其拾取并发送到默认仪表板的原因

此外，当您使用插值填充
href
时，您应该使用
ng href
：

<a ng-href="{{menuItem.url}}">

解决方案：

// the ng-class allow the expansion of menu            
  <li class="{{menuItem.isActive}}" data-ng-repeat="menuItem in vm.menuItems" data-ng-class="{'': vm.expandedItem !== menuItem, 'expanded': vm.expandedItem === menuItem}" data-ng-click="vm.expandNav(menuItem, menuItem.url)"  style="cursor: pointer;">

  // click to go to next route
   <a href="{{menuItem.url}}">                     
      <span class="menu-item-parent">{{menuItem.name}}</span>
        <b data-ng-if="menuItem.subMenu.length > 0 ">
          <em class="fa" data-ng-class="{'fa fa-expand-o': vm.expandedItem !== menuItem, 'fa fa-collapse-o': vm.expandedItem === menuItem}">
                    </em>
                </b>
            </a>   

    vm.expandNav = function (item, url) {
        if (url == '') {
            if (item !== vm.expandedItem) {
                vm.expandedItem = item;
            } else {
                vm.expandedItem = null;
            }
        }
    };

    vm.menuItems = [
          { name: "Dashboard", url: "/", icon: "fa-home", isActive: "active" },
          { name: "Inbox", url: "/inserts/inbox", icon: "fa-inbox" },
          { name: "Graphs", url: "#", icon: "fa-bar-chart-o",
              subMenu:
                  [
                      { name: "Flot Charts", url: "/inserts/flot" },
                      { name: "Morris Charts", url: "/inserts/morris" },
                      { name: "Inline Charts", url: "/inserts/inline-charts" }
                  ]
          }

        .otherwise({
            templateUrl: '/app/html/inserts/dashboard.html',
            controller: 'RouteCtrl'
        });

    vm.expandNav = function (item, url) {
        if (url === '#') {
            event.preventDefault();

            if (item !== vm.expandedItem) {
                vm.expandedItem = item;
            } else {
                vm.expandedItem = null;
            }
        }
    };

    <ul>
        <li class="{{menuItem.isActive}}" data-ng-repeat="menuItem in vm.menuItems" data-ng-class="{'': vm.expandedItem !== menuItem, 'expanded': vm.expandedItem === menuItem}" data-ng-click="vm.expandNav(menuItem, menuItem.url)" style="cursor: pointer;">
            <a ng-href="{{menuItem.url}}">
                <i class="fa fa-lg fa-fw {{menuItem.icon}}"></i>
                <span class="menu-item-parent">{{menuItem.name}}</span>
                <b data-ng-if="menuItem.subMenu.length > 0 ">
                    <em class="fa" data-ng-class="{'fa fa-expand-o': vm.expandedItem !== menuItem, 'fa fa-collapse-o': vm.expandedItem === menuItem}">
                    </em>
                </b>
            </a>
            <ul data-ng-class="{'expanded': vm.expandedItem !== menuItem, 'expanded expandMe': vm.expandedItem === menuItem}" data-ng-click="vm.expandNav(menuItem, menuItem.url)">
                <li data-ng-repeat="subMenu in menuItem.subMenu">
                    <a ng-href="{{subMenu.url}}" style="cursor: pointer;">{{subMenu.name}}</a>
                </li>
            </ul>
        </li>
    </ul>

控制器中的正确代码：

// the ng-class allow the expansion of menu            
  <li class="{{menuItem.isActive}}" data-ng-repeat="menuItem in vm.menuItems" data-ng-class="{'': vm.expandedItem !== menuItem, 'expanded': vm.expandedItem === menuItem}" data-ng-click="vm.expandNav(menuItem, menuItem.url)"  style="cursor: pointer;">

  // click to go to next route
   <a href="{{menuItem.url}}">                     
      <span class="menu-item-parent">{{menuItem.name}}</span>
        <b data-ng-if="menuItem.subMenu.length > 0 ">
          <em class="fa" data-ng-class="{'fa fa-expand-o': vm.expandedItem !== menuItem, 'fa fa-collapse-o': vm.expandedItem === menuItem}">
                    </em>
                </b>
            </a>   

    vm.expandNav = function (item, url) {
        if (url == '') {
            if (item !== vm.expandedItem) {
                vm.expandedItem = item;
            } else {
                vm.expandedItem = null;
            }
        }
    };

    vm.menuItems = [
          { name: "Dashboard", url: "/", icon: "fa-home", isActive: "active" },
          { name: "Inbox", url: "/inserts/inbox", icon: "fa-inbox" },
          { name: "Graphs", url: "#", icon: "fa-bar-chart-o",
              subMenu:
                  [
                      { name: "Flot Charts", url: "/inserts/flot" },
                      { name: "Morris Charts", url: "/inserts/morris" },
                      { name: "Inline Charts", url: "/inserts/inline-charts" }
                  ]
          }

        .otherwise({
            templateUrl: '/app/html/inserts/dashboard.html',
            controller: 'RouteCtrl'
        });

    vm.expandNav = function (item, url) {
        if (url === '#') {
            event.preventDefault();

            if (item !== vm.expandedItem) {
                vm.expandedItem = item;
            } else {
                vm.expandedItem = null;
            }
        }
    };

    <ul>
        <li class="{{menuItem.isActive}}" data-ng-repeat="menuItem in vm.menuItems" data-ng-class="{'': vm.expandedItem !== menuItem, 'expanded': vm.expandedItem === menuItem}" data-ng-click="vm.expandNav(menuItem, menuItem.url)" style="cursor: pointer;">
            <a ng-href="{{menuItem.url}}">
                <i class="fa fa-lg fa-fw {{menuItem.icon}}"></i>
                <span class="menu-item-parent">{{menuItem.name}}</span>
                <b data-ng-if="menuItem.subMenu.length > 0 ">
                    <em class="fa" data-ng-class="{'fa fa-expand-o': vm.expandedItem !== menuItem, 'fa fa-collapse-o': vm.expandedItem === menuItem}">
                    </em>
                </b>
            </a>
            <ul data-ng-class="{'expanded': vm.expandedItem !== menuItem, 'expanded expandMe': vm.expandedItem === menuItem}" data-ng-click="vm.expandNav(menuItem, menuItem.url)">
                <li data-ng-repeat="subMenu in menuItem.subMenu">
                    <a ng-href="{{subMenu.url}}" style="cursor: pointer;">{{subMenu.name}}</a>
                </li>
            </ul>
        </li>
    </ul>

正确的html:

// the ng-class allow the expansion of menu            
  <li class="{{menuItem.isActive}}" data-ng-repeat="menuItem in vm.menuItems" data-ng-class="{'': vm.expandedItem !== menuItem, 'expanded': vm.expandedItem === menuItem}" data-ng-click="vm.expandNav(menuItem, menuItem.url)"  style="cursor: pointer;">

  // click to go to next route
   <a href="{{menuItem.url}}">                     
      <span class="menu-item-parent">{{menuItem.name}}</span>
        <b data-ng-if="menuItem.subMenu.length > 0 ">
          <em class="fa" data-ng-class="{'fa fa-expand-o': vm.expandedItem !== menuItem, 'fa fa-collapse-o': vm.expandedItem === menuItem}">
                    </em>
                </b>
            </a>   

    vm.expandNav = function (item, url) {
        if (url == '') {
            if (item !== vm.expandedItem) {
                vm.expandedItem = item;
            } else {
                vm.expandedItem = null;
            }
        }
    };

    vm.menuItems = [
          { name: "Dashboard", url: "/", icon: "fa-home", isActive: "active" },
          { name: "Inbox", url: "/inserts/inbox", icon: "fa-inbox" },
          { name: "Graphs", url: "#", icon: "fa-bar-chart-o",
              subMenu:
                  [
                      { name: "Flot Charts", url: "/inserts/flot" },
                      { name: "Morris Charts", url: "/inserts/morris" },
                      { name: "Inline Charts", url: "/inserts/inline-charts" }
                  ]
          }

        .otherwise({
            templateUrl: '/app/html/inserts/dashboard.html',
            controller: 'RouteCtrl'
        });

    vm.expandNav = function (item, url) {
        if (url === '#') {
            event.preventDefault();

            if (item !== vm.expandedItem) {
                vm.expandedItem = item;
            } else {
                vm.expandedItem = null;
            }
        }
    };

    <ul>
        <li class="{{menuItem.isActive}}" data-ng-repeat="menuItem in vm.menuItems" data-ng-class="{'': vm.expandedItem !== menuItem, 'expanded': vm.expandedItem === menuItem}" data-ng-click="vm.expandNav(menuItem, menuItem.url)" style="cursor: pointer;">
            <a ng-href="{{menuItem.url}}">
                <i class="fa fa-lg fa-fw {{menuItem.icon}}"></i>
                <span class="menu-item-parent">{{menuItem.name}}</span>
                <b data-ng-if="menuItem.subMenu.length > 0 ">
                    <em class="fa" data-ng-class="{'fa fa-expand-o': vm.expandedItem !== menuItem, 'fa fa-collapse-o': vm.expandedItem === menuItem}">
                    </em>
                </b>
            </a>
            <ul data-ng-class="{'expanded': vm.expandedItem !== menuItem, 'expanded expandMe': vm.expandedItem === menuItem}" data-ng-click="vm.expandNav(menuItem, menuItem.url)">
                <li data-ng-repeat="subMenu in menuItem.subMenu">
                    <a ng-href="{{subMenu.url}}" style="cursor: pointer;">{{subMenu.name}}</a>
                </li>
            </ul>
        </li>
    </ul>









我对你的提议一无所知。我想我的情况已经解释清楚了。