AngularJS 设置初始活动类 [英] AngularJS set initial active class

问题描述

我正在使用 引导标签 和 Angular ng-repeat.

我遇到的问题是第一个 li 和第一个 div.tab-pane 都需要一个活动类.Bootstrap 会在一个选项卡被点击后处理这个问题，但是，正如你所看到的，不是在加载时.

我的问题是，如何在第一个 li 和 div.tab-pane 上设置活动类?

演示:

http://jsfiddle.net/FQgHx/

解决方案

您所要做的就是将 ng-class 指令放在您最初希望激活的选项卡和选项卡窗格上.您可以将 ng-class 指令中的 $index == 0 表达式更改为您想要的任何内容.这可以使用您范围内的函数或变量.

这是一个 JS Fiddle，展示了如何做到这一点:http://jsfiddle.net/digitalzebra/qqPZd/

这是最终代码...注意 ng-class 指令:

<div ng-init="names = [{name:'one'}, {name:'two'}, {name:'three'}, {name:'four'}, {name:'five'}]"><ul class="nav nav-tabs"><li ng-repeat="name in names" ng-class="{active: $index == 0}"><a href="#tab{{$index + 1}}" data-toggle="tab">周{{acute.Week}}</a><div class="tab-content"><div class="tab-pane淡入" id="tab{{$index + 1}}" ng-repeat="name in names" ng-class="{active: $index == 0}"><p>{{$index + 1}}</p>

I'm using Bootstrap tabs with an Angular ng-repeat.

The problem I'm running into is that the first li and the first div.tab-pane each need an active class. Bootstrap takes care of that after a tab is clicked but, as you can see, not on load.

My question is, how can I set an active class on the first li and div.tab-pane?

Demo:

http://jsfiddle.net/FQgHx/

解决方案

All you have to do is put an ng-class directive on the tab and tab pane that you would like active initially. You can change the expression from $index == 0 in the ng-class directive to whatever you would like. This could use a function or variable in your scope.

Here is a JS Fiddle showing how to do this: http://jsfiddle.net/digitalzebra/qqPZd/

And here is the final code... notice the ng-class directives:

<div ng-app>
    <div ng-init="names = [{name:'one'}, {name:'two'}, {name:'three'}, {name:'four'}, {name:'five'}]">
    <ul class="nav nav-tabs">
    <li ng-repeat="name in names" ng-class="{active: $index == 0}">
      <a href="#tab{{$index + 1}}" data-toggle="tab">Week {{acute.Week}}</a>
    </li>
  </ul>
  <div class="tab-content">
    <div class="tab-pane fade in" id="tab{{$index + 1}}" ng-repeat="name in names" ng-class="{active: $index == 0}">
      <p>{{$index + 1}}</p>
    </div>
  </div>
</div>
</div>

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