ngClass style with dash in key
AngularjsAngularjs Problem Overview
I hope this saves someone a headache with styles that use dashes, especially since bootstrap has become so popular.
I am using angular 1.0.5 by way of
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js"></script>
In the ngClass documentation, the example is simple, but it also mentions the expression can be a map of class names to boolean values. I was trying to use the "icon-white" style on my icon as shown in the bootstrap documentation, depending on a boolean variable.
<i class="icon-home" ng-class="{icon-white: someBooleanValue}">
The line above does not work. The class is not appended with icon-white
when someBooleanValue
is true. However, if I change the key to iconWhite
, it is successfully added to the list of class values. How would one add a value with a dash?
Angularjs Solutions
Solution 1 - Angularjs
After hours of hacking around, it turns out the dash gets interpolated! Quotes are needed.
<i class="icon-home" ng-class="{'icon-white': someBooleanValue}">
UPDATE:
In older versions of Angular, using a backslash also does the trick, but not in the newer versions.
<i class="icon-home" ng-class="{icon\-white: someBooleanValue}">
The former is probably preferred, since you can more easily search for it in your favorite editor.
Solution 2 - Angularjs
\'icon-white\'
works as well (with AngularJS 1.2.7)
Solution 3 - Angularjs
alternative for uses ng-class :
.menu-disabled-true{
color: red;
}
.menu-disabled-false{
color: green;
}
<div ng-controller="DeathrayMenuController">
<p class=menu-disabled-{{status}}>shanam</p>
<button ng-click="action()">click me</button>
</div>
<script>
function DeathrayMenuController($scope) {
$scope.status=true
$scope.action= function(){
$scope.status=!$scope.status
}
}
</script>