问题
I'm trying to conditionally assign a class to a div based on the value I obtained from my back-end system.
Say there is an object 'A' which has a variable status which possibly has values status1 and status2.
I'm trying to assign 2 classes (class1 and class2) conditionally depending on the status using Angular 2. Following is the condition I'm using. Please suggest a working alternative for this,
<div ng-class="{status1 : 'class1', status2 : 'class2'}[A.status]">
...
</div>
回答1:
You can bind your object to the [ngClass] directive
<div [ngClass]="{'active': isActive, 'disabled': isDisabled}">
almost the same syntax as angular 1. just add the square brackets
回答2:
Angular 2 provide some way to add class with the condition , this link is helpful
Angular 2 conditional class with *ngClass
来源：https://stackoverflow.com/questions/39195742/assign-classes-conditionally-in-angular2