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Adding multiple class using ng-class

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不知归路
不知归路 2020-11-22 12:47

Can we have multiple expression to add multiple ng-class ?

for eg.



        

                      

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11条回答
  • 情话喂你
    2020-11-22 13:07

    With multiple conditions

    <div ng-class="{'class1' : con1 || can2, 'class2' : con3 && con4}">
Hello World!
</div>
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  • 面向向阳花
    2020-11-22 13:09

    Here is an example comparing multiple angular-ui-router states using the OR || operator: 

    <li ng-class="
    {
        warning:
            $state.includes('out.pay.code.wrong')
            || $state.includes('out.pay.failed')
        ,
        active:
            $state.includes('out.pay')
    }
">

    It will give the li the classes warning and/or active, depening on whether the conditions are met.

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  • 面向向阳花
    2020-11-22 13:11

    Yes you can have multiple expression to add multiple class in ng-class.

    For example:

    <div ng-class="{class1:Result.length==2,class2:Result.length==3}"> Dummy Data </div>
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  • [愿得一人]
    2020-11-22 13:11

    Your example works for conditioned classes (the class name will show if the expressionDataX is true):

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

    You can also add multiple classes, supplied by the user of the element:

    <div ng-class="[class1, class2]"></div>

    Usage:

    <div class="foo bar" class1="foo" class2="bar"></div>

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  • 生来不讨喜
    2020-11-22 13:13

    Using a $scope method on the controller, you can calculate what classes to output in the view. This is especially handy if you have a complex logic for calculating class names and it will reduce the amount of logic in your view by moving it to the controller:

    app.controller('myController', function($scope) {

    $scope.className = function() {

        var className = 'initClass';

        if (condition1())
            className += ' class1';

        if (condition2())
            className += ' class2';

        return className;
    };
});

    and in the view, simply:

    <div ng-class="className()"></div>
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  • 没有蜡笔的小新
    2020-11-22 13:17

    Other way we can create a function to control "using multiple class"

    CSS

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

    Script

    <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>

    Using it

    <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>

    You can refer to full code page at ng-class if example

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