javascript - angularjs 显示/隐藏标签，点击同一个标签隐藏内容

Question

当我点击标签A时，A内容显示

当我点击选项卡B时，A内容隐藏B内容显示

但是我想要的效果是点击tab A，A内容显示，再次点击A tab内容隐藏。

任何建议都会有帮助谢谢

<ul class="row text-center">
                <li class="col col-33">
                    <a href="javascript:void(0);" ng-class="{selected: tab==a}" ng-click="tab = a ">a <i class="icon ion-arrow-down-b"></i></a>
                </li>
                <li class="col col-33">
                    <a href="javascript:void(0); "  ng-class="{selected: tab==b}" ng-click="tab = b ">b <i class="icon ion-arrow-down-b"></i></a>
                </li>
                <li class="col col-33">
                    <a href="javascript:void(0);"  ng-class="{selected: tab==c}" ng-click="tab = c ">c <i class="icon ion-arrow-down-b"></i></a>
                </li>
            </ul>
 <div class="a"  ng-show="tab == a">a</div>
 <div class="b"  ng-show="tab == b">b</div>
 <div class="c"  ng-show="tab == c">c</div>

Answer 1

您需要将 ng-click 的表达式更改为 ng-click="tab = tab=='a'? null: 'a'"

<ul class="row text-center">
    <li class="col col-33">
        <a href="javascript:void(0);" ng-class="{selected: tab=='a'}" ng-click="tab = tab=='a'? null: 'a'">
          a <i class="icon ion-arrow-down-b"></i>
          </a>
    </li>
    <li class="col col-33">
        <a href="javascript:void(0); " ng-class="{selected: tab=='b'}" ng-click="tab = tab=='b'? null: 'b' ">
          b 
        <i class="icon ion-arrow-down-b"></i></a>
    </li>
    <li class="col col-33">
        <a href="javascript:void(0);" ng-class="{selected: tab=='c'}" ng-click="tab = tab=='c'? null: 'c' ">
          c <i class="icon ion-arrow-down-b"></i>
        </a>
    </li>
</ul>
<div class="a" ng-show="tab == 'a'">a</div>
<div class="b" ng-show="tab == 'b'">b</div>
<div class="c" ng-show="tab == 'c'">c</div>