What is Ng switch in AngularJS?
AngularJS ng-switch Directive The ng-switch directive lets you hide/show HTML elements depending on an expression. Child elements with the ng-switch-when directive will be displayed if it gets a match, otherwise the element, and its children will be removed.
How does an NG switch work?
NgSwitchlink The [ngSwitch] directive on a container specifies an expression to match against. The expressions to match are provided by ngSwitchCase directives on views within the container. Every view that matches is rendered. If there are no matches, a view with the ngSwitchDefault directive is rendered.
What is switch in Angular?
In Angular 8, ngSwitch is a structural directive which is used to Add/Remove DOM Element. It is similar to switch statement of C#. The ngSwitch directive is applied to the container element with a switch expression.
Why we use NG-if in AngularJS?
The ng-if Directive in AngularJS is used to remove or recreate a portion of HTML element based on an expression. The ng-if is different from ng-hide because it completely removes the element in the DOM rather than just hiding the display of the element.
How do you use NG content?
Create a component. In the template for your component, add an element where you want the projected content to appear. Add a select attribute to the elements. Angular supports selectors for any combination of tag name, attribute, CSS class, and the :not pseudo-class.
What is Ng container and ng-template?
In simple terms, ng-container is like a Higher component of React, which only aids in the rendering of its child elements. ng-template is basically for internal implementation of Angular, wherein anything inside the ng-template is completely ignored while rendering and it basically becomes a comment on view source.
Where is ngSwitch syntax used?
Important Points. You can place one or more than one ngSwitchDefault anywhere inside the container element and not necessarily at the bottom. Any element within the ngSwitch statement but outside of any NgSwitchCase or ngSwitchDefault directive is displayed as it is. The elements are not hidden but removed from the DOM …
What is Ng-container and ng-template?
What is ng-template in Angular?
ng-template is an Angular element that is used for rendering HTML in a template. However, it is not rendered directly on DOM. If you include an ng-template tag to a template, the tag and the content inside it will be replaced by comment upon render.
What is * ngIf in Angular?
The ngIf directive removes or recreates a portion of the DOM tree based on an {expression}. If the expression assigned to ngIf evaluates to a false value then the element is removed from the DOM, otherwise a clone of the element is reinserted into the DOM.
What is Ng-content in Angular?
The ng-content is used when we want to insert the content dynamically inside the component that helps to increase component reusability. Using ng-content we can pass content inside the component selector and when angular parses that content that appears at the place of ng-content.