如何激活（nav选项卡）Bootstrap Twitter（Angular 2）

Question

我有一个导航，Twitter Bootstrap，在其中一个标签(#B ..)中，我有一个图像，点按它会更改为另一个标签(#C ..)。

我可以更改该标签，但我不能，新标签(#C ..)设置为有效。并且此图片标签(#B ..)设置为停用。 （例如removeClass active）

<ul class="nav nav-tabs">
    <li class="nav active"> <a [attr.href]="'#A' + cObj" data-toggle="tab"> Info </a></li>
    <li class="nav">        <a [attr.href]="'#B' + cObj" data-toggle="tab"> Info </a></li>
    <li class="nav">        <a [attr.href]="'#C' + cObj" data-toggle="tab"> Info </a></li>
</ul>

<div class="tab-pane fade"           [id]="'B' + cObj">
..//

<a [attr.href]="'#C' + cObj" data-toggle="tab">
<img...>
..//

我尝试[class.active] =" false "以各种方式使用它，例如[ '#B' + cObj.class.active] =" false "所以我不能，有什么可以帮助我的。

我希望能够激活和停用标签，从一个标签切换到另一个标签，我很抱歉我的英文不好我希望您理解我的问题

更新：我使用以下方法解决了这个问题。

也许用户的回应会更好地帮助他人：

• Thierry Templier

• Sasxa

• Günter Zöchbauer

<ul class="nav nav-tabs">
    <li class="nav active" [id]="'IDA' + contadorObjet.name" [class.active]="testLocation1() == ('A' + contadorObjet.name) || '10'" >       <a [attr.href]="'#A' + contadorObjet.name" data-toggle="tab"> Info </a></li>
    <li class="nav"        [id]="'IDB' + contadorObjet.name" [class.active]="testLocation1() == 'B' + contadorObjet.name">                  <a [attr.href]="'#B' + contadorObjet.name" data-toggle="tab"> Info </a></li>
    <li class="nav"        [id]="'IDC' + contadorObjet.name" [class.active]="testLocation1() == 'C' + contadorObjet.name">                  <a [attr.href]="'#C' + contadorObjet.name" data-toggle="tab"> Info </a></li>
</ul>

注意：＆＃39; 10＆＃39;是测试的ID父级

<a [attr.href]="'#C' + contadorObjet.name" data-toggle="tab" 
   #elem (click)="testLocationAct(elem.href, 'IDB' + contadorObjet.name)" >

    testLocation1():string{
      //alert(document.activeElement.toString().split(/#(.+)?/)[1]);
      return document.activeElement.toString().split(/#(.+)?/)[1];
    }

    testLocationAct(test: any, test1: any){

      document.getElementById(test1).classList.remove('active');
      document.activeElement = test;
    }

更新

  

你能为此添加一个plunker吗？我正在尝试侧栏数据切换和   它不起作用 - 加里

Plunker

在它适合我想要的东西之前，在发布之后，我做了一些改变，现在效果更好（我认为）。

<div class="container" *ngFor="#contadorObjeto of contadorObjetos ; #contadorObjetoI = index" nginit="test='#' id=10">

              <ul class="nav nav-tabs">
                <li class="nav active" [id]="'IDA' + contadorObjeto.name" ([class.active])="testLocation1() == ('A' + contadorObjeto.name) || '10'">        <a [attr.href]="'#A' + contadorObjeto.name" data-toggle="tab"> Info </a></li>
                <li class="nav"        [id]="'IDB' + contadorObjeto.name" ([class.active])="testLocation1() == 'B' + contadorObjeto.name">                  <a [attr.href]="'#B' + contadorObjeto.name" data-toggle="tab"> Info </a></li>
                <li class="nav"        [id]="'IDC' + contadorObjeto.name" ([class.active])="testLocation1() == 'C' + contadorObjeto.name">                  <a [attr.href]="'#C' + contadorObjeto.name" data-toggle="tab"> Info </a></li>
              </ul>

              <div class="tab-content">

                <div class="tab-pane fade in active" [id]="'A' + contadorObjeto.name">Content inside tab A
                  {{ contadorObjeto.name }}
                </div>

                <div class="tab-pane fade in " [id]="'B' + contadorObjeto.name">Content inside tab B 
                  <a [attr.href]="'#C' + contadorObjeto.name" data-toggle="tab" #elem (click)="testLocationAct(elem.href, 'IDB' + contadorObjeto.name)" >
                      <img class="img-responsive"
                      height = "230" width = "230"
                      src="https://upload.wikimedia.org/wikipedia/commons/thumb/5/52/Free_logo.svg/200px-Free_logo.svg.png" />
                  </a>
                </div>

                <div class="tab-pane fade in " [id]="'C' + contadorObjeto.name">Content inside tab C 
                </div>
              </div>    

            </div>

    testLocation1():string{
      //alert(document.activeElement.toString().split(/#(.+)?/)[1]);
      return document.activeElement.toString().split(/#(.+)?/)[1];
    }

    testLocationAct(test: any, test1: any){

      liNavID = "ID" + test.toString().split(/#(.+)?/)[1];

      document.getElementById(test1).classList.remove('active');
      document.getElementById(liNavID).classList.add('active');

      //console.log(liNavID);
    }

我已经调整了示例，新代码使其看起来与之前类似。您可以单击选项卡2内的图像进行测试。

我希望能帮助你。

Answer 1

我会创建一个包含所有nav元素的数组。 nav元素将具有活动属性。

您将使用循环创建导航元素：

<ul class="nav nav-tabs">
  <li *ngFor="#tab of tabs" class="nav active"
      [ngClass]="{active:tab.active}">
    <a> Info </a></li>
</ul>

当您点击导航时，您将执行此方法

selectNav(nav) {
  this.navs.forEach((nav) => {
    nav.active = false;
  });
  nav.active = true;
}

此方法将链接到这样的nav元素：

<ul class="nav nav-tabs">
  <li ngFor="#tab of tabs" (...)>
    <a (click)="selectNav(nav)>
      Info
    </a>
  </li>
</ul>

我认为这篇文章可以帮到你：

• 在Angular 2中开发标签组件 - http://blog.thoughtram.io/angular/2015/04/09/developing-a-tabs-component-in-angular-2.html

Answer 2

您可以这样做（将"cObj == 'A'"更改为您需要的任何内容）：

<li class="nav" [class.active]="cObj == 'A'"> <a [attr.href]="'#A' + cObj"> Info </a></li>
<li class="nav" [class.active]="cObj == 'B'"> <a [attr.href]="'#B' + cObj"> Info </a></li>

Answer 3

如果使用路由器，请设置.router-link-active class

//our root app component
import {Component} from 'angular2/core'
import {RouteConfig, ROUTER_DIRECTIVES} from "angular2/router";

@Component({
  template: "<h1>First component</h1>"
})
export class FirstComponent { }



@Component({
  template: "<h1>Second component</h1>"
})
export class SecondComponent { }



@Component({
  template: "<h1>Third component</h1>"
})
export class ThirdComponent { }



@Component({
  selector: 'my-app',
  providers: [],
  template: `
    <div>
    <ul>
      <li>
        <a [routerLink]="['First']">First</a>
      </li>
      <li>
        <a [routerLink]="['Second']">Second</a>
      </li>
      <li>
        <a [routerLink]="['Third']">Third</a>
      </li>
    </ul>
    </div>
    <router-outlet></router-outlet>
  `,
  styles: [".router-link-active { background-color: red; }"],
  directives: [ROUTER_DIRECTIVES]
})
@RouteConfig([
    { path: "/first", name: "First", component: FirstComponent, useAsDefault: true },
  { path: "/second", name: "Second", component: SecondComponent },
  { path: "/third", name: "Third", component: ThirdComponent }
])
export class AppComponent { }

完整代码：https://github.com/guyoung/GyPractice-Angular2Advanced/tree/master/apps/router_link_active

Answer 4

您无法动态构建属性名称。请改用ngClass

<li ngClass="{'active': isActive}">

另见：
- https://angular.io/docs/ts/latest/api/common/NgClass-directive.html
- https://stackoverflow.com/a/33713824/217408

Answer 5

<div class="CompleteContainer">
  <div class="ItemContainer">
    <div class="ItemTopContainer">
      <div class="ItemTopLeftContainer">
        <div class="ItemTopLeft">
          &nbsp;
        </div>
      </div>
      <div class="ItemTopRightContainer">
        <div class="ItemTopRight">
          &nbsp;
        </div>
      </div>
    </div>
    <div class="ItemBottomContainer">
      Foo bar
    </div>
  </div>
  <div class="ItemContainer">
    <div class="ItemTopContainer">
      <div class="ItemTopLeftContainer">
        <div class="ItemTopLeft">
          &nbsp;
        </div>
      </div>
      <div class="ItemTopRightContainer">
        <div class="ItemTopRight">
          &nbsp;
        </div>
      </div>
    </div>
    <div class="ItemBottomContainer">
      Foo bar, lorum ipsum
    </div>
  </div>
  <div class="ItemContainer">
    <div class="ItemTopContainer">
      <div class="ItemTopLeftContainer">
        <div class="ItemTopLeft">
          &nbsp;
        </div>
      </div>
      <div class="ItemTopRightContainer">
        <div class="ItemTopRight">
          &nbsp;
        </div>
      </div>
    </div>
    <div class="ItemBottomContainer">
      Lorum ipsum
    </div>
  </div>
</div>

constructor() { }
  tab: number;
  ngOnInit() {
    this.tab = 1;
  }

  selectTab(id){
    this.tab = id;
  }

  activeTab(num){
    return this.tab === num;
  }