How to combain two inline functions in ng-class [duplicate] - angularjs

Question

Can we have multiple expression to add multiple ng-class ?
for eg.
<div ng-class="{class1: expressionData1, class2: expressionData2}"></div>
If yes can anyone put up the example to do so.
.

Answer 1

To apply different classes when different expressions evaluate to true:
<div ng-class="{class1 : expression1, class2 : expression2}">
Hello World!
</div>
To apply multiple classes when an expression holds true:
<!-- notice expression1 used twice -->
<div ng-class="{class1 : expression1, class2 : expression1}">
Hello World!
</div>
or quite simply:
<div ng-class="{'class1 class2' : expression1}">
Hello World!
</div>
Notice the single quotes surrounding css classes.

Answer 2

For the ternary operator notation:
<div ng-class="expression1? 'class1 class2' : 'class3 class4'">

Answer 3

An incredibly powerful alternative to other answers here:
ng-class="[ { key: resulting-class-expression }[ key-matching-expression ], .. ]"
Some examples:
1. Simply adds 'class1 class2 class3' to the div:
<div ng-class="[{true: 'class1'}[true], {true: 'class2 class3'}[true]]"></div>
2. Adds 'odd' or 'even' classes to div, depending on the $index:
<div ng-class="[{0:'even', 1:'odd'}[ $index % 2]]"></div>
3. Dynamically creates a class for each div based on $index
<div ng-class="[{true:'index'+$index}[true]]"></div>
If $index=5 this will result in:
<div class="index5"></div>
Here's a code sample you can run:
var app = angular.module('app', []);
app.controller('MyCtrl', function($scope){
$scope.items = 'abcdefg'.split('');
});
.odd { background-color: #eee; }
.even { background-color: #fff; }
.index5 {background-color: #0095ff; color: white; font-weight: bold; }
* { font-family: "Courier New", Courier, monospace; }
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.1/angular.min.js"></script>
<div ng-app="app" ng-controller="MyCtrl">
<div ng-repeat="item in items"
ng-class="[{true:'index'+$index}[true], {0:'even', 1:'odd'}[ $index % 2 ]]">
index {{$index}} = "{{item}}" ng-class="{{[{true:'index'+$index}[true], {0:'even', 1:'odd'}[ $index % 2 ]].join(' ')}}"
</div>
</div>

Answer 4

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>

Answer 5

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>

Answer 6

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>

Answer 7

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.

Answer 8

Below active and activemenu are classes and itemCount and ShowCart is expression/boolean values.
ng-class="{'active' : itemCount, 'activemenu' : showCart}"

Answer 9

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

Answer 10

Found another way thanks to Scotch.io
<div ng-repeat="step in steps" class="step-container step" ng-class="[step.status, step.type]" ng-click="onClick(step.type)">
This was my reference.PATH

Answer 11

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

Answer 12

I use this:
[ngClass]="[{
'basic':'mat-basic-button',
'raised':'mat-raised-button',
'stroked':'mat-stroked-button'
}[
button.style ?? 'raised'
]]"