Whats equivalent to ngSrc in the newer Angular?

Question

I would like to implement img, with a src coming from JSON object.

In AngularJS, I could do:

<img ng-src="{{hash}}" alt="Description" /> 

Is there any equivalent to this in Angular 2+?

Answer 1

AngularJS:

<img ng-src="{{movie.imageurl}}"> 

Angular 2+:

<img [src]="movie.imageurl"> 

Angular docs

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Note that interpolation can achieve the same result:

<img src="{{vehicle.imageUrl}}">  <img [src]="vehicle.imageUrl"> 

There is no technical difference between these two statements for property binding, as long as you don't desire two-way binding.

Interpolation is a convenient alternative for property binding in many cases. In fact, Angular translates those interpolations into the corresponding property bindings before rendering the view. source

Answer 2

It is a two-step process to achieve the same functionality of ng-src in your Angular application.

First Step:

In your HTML, use the new syntax:

<img [src]="imageSrc">

Second Step:

In your component/directive, initialize the value to be empty. For example:

@Component({   selector: 'ag-video',   templateUrl: './video.component.html' }) export class SampleComponent {    imageSrc = ''; } 

Now, this would eliminate the null network call (empty call) due to the value not being set on to the element.