jqwidgets-scripts-custom/demos/Angular/loader/showonlyicon/src/app/app.component.html

jQWidgets is an advanced jQuery, Angular 7, Vue, React, ASP .NET MVC, Custom Elements and HTML5 UI framework.

<jqxLoader [theme]="'material'" #jqxLoader
           [text]="''"
           [width]="60"
           [height]="60">
</jqxLoader>
<jqxButton [theme]="'material'" #openLoader
           (onClick)="openLoaderClick($event)"
           [width]="150">
  Open Loader
</jqxButton>
<jqxButton [theme]="'material'" #closeLoader
           (onClick)="closeLoaderClick($event)"
           [width]="100">
  Close
</jqxButton>