How do you write if else in AngularJS?
How do you write if else in AngularJS?
- As we know, ngIf else statement works on a variable that has a boolean type. Create an angular app and move to src/app. First, we need to define a variable say “check” in app. component.
- After defining a variable, move to app. component. html and create two divisions using bootstrap classes.
What is NG-if in Angular?
AngularJS ng-if Directive The ng-if directive removes the HTML element if the expression evaluates to false. If the if statement evaluates to true, a copy of the Element is added in the DOM.
Which is better Ng-if or NG-show?
ng-if can only render data whenever the condition is true. It doesn’t have any rendered data until the condition is true. ng-show can show and hide the rendered data, that is, it always kept the rendered data and show or hide on the basis of that directives.
How do you use ngIf else?
You can use ngIf in four ways to achieve a simple if-else procedure:
- Just use If If isValid is true
- Using If with Else (please notice to templateName) If isValid is true If isValid is false
How do I use ngIf in angular 9?
Using ngIf in Angular 9 One way of achieving this in Angular 9 applications is through using the ngIf directive. On the ContactListComponent component, we have added the Boolean showActions variable. You can then listen for the authentication state and set the showActions accordingly.
What is Ng container and ng-template?
ng-container serves as a container for elements which can also accept structural directives but is not rendered to the DOM, while ng-template allows you to create template content that is not rendered until you specifically (conditionally or directly) add it to the DOM.
What is Ng show in AngularJS?
AngularJS ng-show Directive The ng-show directive shows the specified HTML element if the expression evaluates to true, otherwise the HTML element is hidden.
What is the difference between * ngIf and ngIf?
What is the difference between ngIf and *ngIf in Angular? ngIf is the directive. Because it’s a structural directive (template-based), you need to use the * prefix to use it into templates. *ngIf corresponds to the shortcut for the following syntax (“syntactic sugar”):
What is the difference between Ng if and Ng show plus Ng-hide?
The ng-show and ng-hide both are directive . The difference between is : ng-show directive will show the html element if expression resilts is true and ng-hide directive hide the html element if expression result is true .
Can we use ngFor and ngIf in same div?
In Angular, we cannot use two structural directives on the same element. i.e., we cannot place *ngFor,*ngIf together on same element.
What is difference between * ngIf and ngIf?