Question

我有一些像切换器一样工作的按钮。如果单击一个，它将变为活动状态并“关闭”其他按钮。我使用jQuery做了这个，但想使用AngularJS。这是我的代码：

HTML

<div class="button-bar">
    <a class="button button-energized" id="weak">weak</a>
    <a class="button button-energized" id="normal">normal</a>
    <a class="button button-energized" id="strong">strong</a>
</div>

的JavaScript

    .controller('AppCtrl', function($scope, $stateParams) {

        $('#weak').click(function() {
            $('#weak').addClass('active');
            $('#normal').removeClass('active');
            $('#strong').removeClass('active');
        });

        $('#normal').click(function() {
            $('#normal').addClass('active');
            $('#weak').removeClass('active');
            $('#strong').removeClass('active');
        });

        $('#strong').click(function() {
            $('#strong').addClass('active');
            $('#normal').removeClass('active');
            $('#weak').removeClass('active');
        });

   });

Answer 1

您可以ng-click切换selected标记，可以与ng-class一起使用来绑定/取消绑定类。

<强>标记

<div class="button-bar">
    <a class="button button-energized" id="weak" 
       ng-class="{active: $parent.selected=='weak'}" ng-click="$parent.selected='weak'">
      weak
    </a>
    <a class="button button-energized" id="normal" 
       ng-class="{active: selected=='normal'}" ng-click="selected='normal'">
        normal
    </a>
    <a class="button button-energized" id="strong" 
       ng-class="{active: selected=='strong'}" ng-click="selected='strong'">
        strong
    </a>
</div>

Working Fiddle

更好的方式

您可以使用ng-repeat轻松完成此操作，这将减少您的代码行。

<强>标记

$scope.strengths = ["weak","normal","strong"];

<强>代码

<div class="button-bar">
    <a class="button button-energized" id="{{strength}}" 
       ng-class="{active: $parent.selected == strength}" 
       ng-click="$parent.selected=strength"
       ng-repeat="strength in strengths">
      {{strength}}
    </a>
</div>

Answer 2

您可以使用

angular.element（document.querySelector（＆＃34;＃cntrlID＆＃34））。removeClass（＆＃34; customclass＆＃34）;

<强> HTML：

<div class="button-bar">
    <a class="button button-energized" id="weak" ng-click=removeNS()>weak</a>
    <a class="button button-energized" id="normal" ng-click=removeWS()>normal</a>
    <a class="button button-energized" id="strong" ng-click=removeWN()>strong</a>
</div>

<强>角

$scope.removeNS = function(){
    angular.element(document.querySelector("#normal")).removeClass("active");
    angular.element(document.querySelector("#strong")).removeClass("active");
}
$scope.removeWS = function(){
    angular.element(document.querySelector("#weak")).removeClass("active");
    angular.element(document.querySelector("#strong")).removeClass("active");
}
$scope.removeWN = function(){
    angular.element(document.querySelector("#weak")).removeClass("active");
    angular.element(document.querySelector("#normal")).removeClass("active");
}

进一步优化，您可以创建单个函数并将查询选择器和类作为函数参数传递，如：

function(id1,id2,removeClassName)

如何使用AngularJS添加和删除类？

2 个答案: