使用ng-class添加多个类

我们可以有多个表达式来添加多个ng-class吗?

如。

<div ng-class="{class1: expressionData1, class2: expressionData2}"></div>

如果是，谁能举个例子这样做。

当前回答

另一种方法是创建一个函数来控制"使用多个类"

CSS

 <style>
    .Red {
        color: Red;
    }
    .Yellow {
        color: Yellow;
    }
      .Blue {
        color: Blue;
    }
      .Green {
        color: Green;
    }
    .Gray {
        color: Gray;
    }
    .b {
         font-weight: bold;
    }
</style>

脚本

<script>
    angular.module('myapp', [])
            .controller('ExampleController', ['$scope', function ($scope) {
                $scope.MyColors = ['It is Red', 'It is Yellow', 'It is Blue', 'It is Green', 'It is Gray'];
                $scope.getClass = function (strValue) {
                    if (strValue == ("It is Red"))
                        return "Red";
                    else if (strValue == ("It is Yellow"))
                        return "Yellow";
                    else if (strValue == ("It is Blue"))
                        return "Blue";
                    else if (strValue == ("It is Green"))
                        return "Green";
                    else if (strValue == ("It is Gray"))
                        return "Gray";
                }
        }]);
</script>

使用它

<body ng-app="myapp" ng-controller="ExampleController">

<h2>AngularJS ng-class if example</h2>
<ul >
    <li ng-repeat="icolor in MyColors" >
        <p ng-class="[getClass(icolor), 'b']">{{icolor}}</p>
    </li>
</ul>

你可以参考ng-class的完整代码页if example

2015-09-22 10:17:30

其他回答

另一种方法是创建一个函数来控制"使用多个类"

CSS

 <style>
    .Red {
        color: Red;
    }
    .Yellow {
        color: Yellow;
    }
      .Blue {
        color: Blue;
    }
      .Green {
        color: Green;
    }
    .Gray {
        color: Gray;
    }
    .b {
         font-weight: bold;
    }
</style>

脚本

<script>
    angular.module('myapp', [])
            .controller('ExampleController', ['$scope', function ($scope) {
                $scope.MyColors = ['It is Red', 'It is Yellow', 'It is Blue', 'It is Green', 'It is Gray'];
                $scope.getClass = function (strValue) {
                    if (strValue == ("It is Red"))
                        return "Red";
                    else if (strValue == ("It is Yellow"))
                        return "Yellow";
                    else if (strValue == ("It is Blue"))
                        return "Blue";
                    else if (strValue == ("It is Green"))
                        return "Green";
                    else if (strValue == ("It is Gray"))
                        return "Gray";
                }
        }]);
</script>

使用它

<body ng-app="myapp" ng-controller="ExampleController">

<h2>AngularJS ng-class if example</h2>
<ul >
    <li ng-repeat="icolor in MyColors" >
        <p ng-class="[getClass(icolor), 'b']">{{icolor}}</p>
    </li>
</ul>

你可以参考ng-class的完整代码页if example

2015-09-22 10:17:30

下面active和activemenu是类，itemCount和ShowCart是表达式/布尔值。

ng-class="{'active' : itemCount, 'activemenu' : showCart}"

2015-05-16 18:49:20

这里有一个非常强大的替代答案:

ng-class="[  { key: resulting-class-expression }[ key-matching-expression ], ..  ]"

一些例子:

1. 简单地将'class1 class2 class3'添加到div:

<div ng-class="[{true: 'class1'}[true], {true: 'class2 class3'}[true]]"></div>

2. 将'odd'或'even'类添加到div中，这取决于$index:

<div ng-class="[{0:'even', 1:'odd'}[ $index % 2]]"></div>

3.基于$index动态地为每个div创建一个类

<div ng-class="[{true:'index'+$index}[true]]"></div>

如果$index=5，这将导致:

<div class="index5"></div>

下面是一个你可以运行的代码示例:

2016-02-10 03:51:59

有多种条件

<div ng-class="{'class1' : con1 || can2, 'class2' : con3 && con4}">
Hello World!
</div>

2015-10-28 07:05:09

对于三元运算符表示法:

<div ng-class="expression1? 'class1 class2' : 'class3 class4'">

2015-04-15 02:09:33

使用ng-class添加多个类

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