Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

Troubleshooting
Research
Professional Opinions
Ask a Question
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE

troubleshooting Question

Angular @HostBinding simple example

Avatar of Archimede_Pitagorico
Archimede_Pitagorico asked on
CSSAngular
6 Comments1 Solution160 ViewsLast Modified:
Hallo, I would understand very well the Angular @HostBinding concept. Unfortunately, my book is very good but this concept is not very clear explained.

See please the code:

    @Component({
      selector: 'app-test-component',
      templateUrl: './test-component.component.html',
      styleUrls: ['./test-component.component.css']
    })
    export class TestComponentComponent implements OnInit {
    
      @Input() dataModel:AppModel;
      @HostBinding('attr.class') cssClass = 'alfa';
    
      constructor() { 
    
    (...)

My personal explanation: "host binding allow to set something in the host element (in this case the app-test-component tag) from within the component it self (in other words, from this file I mentioned below); in this case, I set the class attribute of this tag to the variable named cssClass and with attribute 'alfa'". Is it correct?

In this case, if I defined the 'alfa' style in the corrispondent css file, why I don't see this style (i.e. background color or something else) in the page which shows my component?

Thank you very much!