Pro Angular 9 by Adam Freeman
Author:Adam Freeman
Language: eng
Format: epub
ISBN: 9781484259986
Publisher: Apress
constructor(public $implicit: any,
public index: number, total: number ) {
this.odd = index % 2 == 1;
this.even = !this.odd;
this.first = index == 0;
this.last = index == total - 1;
setInterval(() => {
this.odd = !this.odd; this.even = !this.even;
this.$implicit.price++;
}, 2000);
}
}
...
Listing 16-13.Modifying Individual Objects in the iterator.directive.ts File in the src/app Folder
Once every two seconds, the values of the odd and even properties are inverted, and the price value is incremented. When you save the changes, you will see that the colors of the table rows change and the prices slowly increase, as illustrated in Figure 16-5.
Figure 16-5.Automatic change detection for individual data source objects
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