- { * } marks the directive as the structural directive
- BrowserModule exposes ng-if and ng-for directives
In the example shown below div is shown if the property showhobbies is true
Component
@Component({ selector: 'user', template: ` <div *ngIf="showhobbies"> <h2>hobbies</h2> <ul> <li *ngFor="let hobby of hobbies"> {{hobby}} </ul> </div> `, }) //Angular Component export class UserComponent { hobbies:string []; showhobbies:boolean; //Constructor constructor(){ this.hobbies=['Music','Movies','Sports' ] this.showhobbies=true; } }
Index.html
<!DOCTYPE html> <html> <head> <title>Angular QuickStart</title> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="styles.css"> <!-- Polyfill(s) for older browsers --> <script src="node_modules/core-js/client/shim.min.js"></script> <script src="node_modules/zone.js/dist/zone.js"></script> <script src="node_modules/reflect-metadata/Reflect.js"></script> <script src="node_modules/systemjs/dist/system.src.js"></script> <script src="systemjs.config.js"></script> <script> System.import('app').catch(function(err){ console.error(err); }); </script> </head> <body> <my-app>Loading AppComponent content here ...</my-app> </body> </html>
Conditional statement for an Image Component
//class export class ProductListComponent{ showImage:boolean=false; //functions toggleImage():void{ this.showImage=!this.showImage; } }
<td ><img *ngIf='showImage' > </td>
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