Angular 2 Add Multiple Classes via [Class. className] Binding

Question

While adding a single class works great in this way -

[class.loading-state]="loading"

But how do I add multiple classes Ex if loading is true add class - "loading-state" & "my-class"

How do I get it done via the [class] binding

Accepted Answer

You can do this by simply using ngClass :

Here first,second and third are the name of the classes.

And instead of true/false , you can directly put your conditions over there

 <div [ngClass]="{'first': true, 'second': true, 'third': false}">...</div>

In your case

 <div [ngClass]="{'loading-state': loading, 'my-class': loading }">...</div>

Or Shorter Veriosn (as @matko.kvesic commented)

<div [ngClass]="{'loading-state my-class': loading}">...</div>

Answer 2

Although Vivek Doshi answer is totally correct, below I put other alternatives to do the same with different boolean variables:

1st Solution: [class.className]

<div [class.first-class]="addFirst" [class.second-class]="addSecond">...</div>

export class MyComponent {
  ...
  addFirst: boolean;
  addSecond: boolean;
  ...
}

Automotive & Future Transportation Editor

Robert Thorne covers electric vehicle innovations, autonomous driving systems, global mobility trends, and automotive engineering developments.

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