The Angular non-null assertion operator (!) serves the same purpose in an Angular template. For example, after you use *ngIf to check that hero is defined, you can assert that hero properties are also defined.
When should we use signal() vs model() in Angular? Angular says the following: ModelSignal is a WritableSignal which means that its value can be changed from anywhere using the set and update meth...
In Angular 7.X The CSS classes are updated as follows, depending on the type of the expression evaluation: string - the CSS classes listed in the string (space delimited) are added Array - the CSS classes declared as Array elements are added Object - keys are CSS classes that get added when the expression given in the value evaluates to a ...
11 According to Angular 1 documentation of ngShow and ngHide, both of these directive adds the css style display: none !important;, to the element according to the condition of that directive (for ngShow adds the css on false value, and for ngHide adds the css for true value). We can achieve this behavior using Angular 2 directive ngClass:
19 Angular ngOnChanges The ngOnChanges() is an inbuilt Angular callback method that is invoked immediately after the default change detector has checked data-bound properties if at least one has changed. Before the view and content, children are checked.
