What is ng-container ? ng-container allows us to create a division or section in a template without introducing a new HTML element. The ng-container does not render in the DOM, but content inside it is rendered. ng-container is not a directive, component, class, or interface, but just a syntax element.
When should I use NG-container?
To sum up, ng-content is used to display children in a template, ng-container is used as a non-rendered container to avoid having to add a span or a div, and ng-template allows you to group some content that is not rendered directly but can be used in other places of your template or you code.
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.
Can we use ng-container inside ng-template?
Also, multiple structural directives are not possible inside ng-template but ng-container can be used to wrap multiple elements containing different structural directives so it is a perfect container.
Where are ng templates used?
ng-template is a virtual element and its contents are displayed only when needed (based on conditions). ng-template should be used along with structural directives like [ngIf],[ngFor],[NgSwitch] or custom structural directives. That is why in the above example the contents of ng-template are not displayed.
What is ng-template used for?
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.
Can we use ngIf and ngFor together?
Best way to use ngFor and ngIf together is to use element to write one of the structural directive. ng-container allows us to create a separate section in a template without adding it to DOM. The ng-container does not get added to the DOM, but content inside it is rendered.
What are Angular templates?
A template is a form of HTML that tells Angular how to render the component. Views are typically arranged hierarchically, allowing you to modify or show and hide entire UI sections or pages as a unit. The template immediately associated with a component defines that component’s host view.
What is Ngcontent in Angular?
The ng-content tag is used for content projection. It is basically a placeholder to hold the dynamic content until it is parsed. Once the template is parsed, Angular replaces the tag with content.
What is the difference between ViewChild and ViewChildren?
ViewChildren is different from the ViewChild . ViewChild always returns the reference to a single element. If there are multiple elements the ViewChild returns the first matching element, ViewChildren always returns all the elements as a QueryList.
What is ngTemplateOutlet in Angular?
ngTemplateOutlet is a structural directive. We use it to insert a template (created by ngTemplate ) in various sections of our DOM. For example, you can define a few templates to display an item and use them display at several places in the View and also swap that template as per the user’s choice.
What is DOM in Angular?
DOM stands for Document Object Model. AngularJS’s directives are used to bind application data to the attributes of HTML DOM elements.
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