They are used to create configurable components. This means the components can be configured depending on the needs of its user. This is well known as Content Projection. Components that are used in published libraries make use of <ng-content> to make themselves configurable.Likewise, people ask, why do we use NG content?
You use the <ng-content></ng-content> tag as a placeholder for that dynamic content, then when the template is parsed Angular will replace that placeholder tag with your content . Think of it like curly brace interpolation, but on a bigger scale.
Also, why we use ng container in angular? Angular: The ng-container Element. ng-container is an element that's available in Angular 2+ and that can act as the host to structural directives. And this is also really useful when using ngIf on inline content to avoid the need for a bunch of span elements.
Additionally, what is Ngcontent?
The ng-content core directive allows for component designs where certain internal details of the template are not hidden inside the component but instead are provided as an input, which in certain cases really simplifies the design.
What is content projection in angular?
Content projection allows you to insert a shadow DOM in your component. To put it simply, if you want to insert HTML elements or other components in a component, then you do that using the concept of content projection. In Angular, you achieve content projection using < ng-content >< /ng-content >.
How do you use NG if?
If the if statement evaluates to true, a copy of the Element is added in the DOM. The ng-if directive is different from the ng-hide, which hides the display of the element, where the ng-if directive completely removes the element from the DOM.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. The directives are – 1.How do I use TemplateRef?
Access a TemplateRef instance by placing a directive on an <ng-template> element (or directive prefixed with * ). The TemplateRef for the embedded view is injected into the constructor of the directive, using the TemplateRef token.What is the difference between Ng content ng container and ng template?
This opens in a new window. The most immediately apparent difference between template and ng-container is the syntax that can be used with structural directives. This is because the template directive, on its own, doesn't do anything but create a TemplateRef intended to be consumed by another piece of rendering logic.How do you use ViewChild?
@ViewChild() decorator can be used to get the first element or the directive matching the selector from the view DOM. @ViewChild() provides the instance of another component or directive in a parent component and then parent component can access the methods and properties of that component or directive.What is ViewChild in angular?
A ViewChild is a component, directive, or element as a part of a template. If we want to access a child component, directive, DOM element inside the parent component, we use the decorator @ViewChild() in Angular. Since the child component can be located inside the parent component, it can accessed as @ViewChild.What is Contentchild in angular?
ContentChildren is a parameter decorator that is used to fetch the QueryList of elements or directives from the content DOM. The QueryList is updated whenever the child element/component is added or removed. The child element reference is set in QueryList just before the ngAfterContentInit lifecycle Hook method.What is shadow Dom?
Shadow DOM is a new DOM feature that helps you build components. You can think of shadow DOM as a scoped subtree inside your element. Read more on Web Fundamentals. Shadow DOM lets you place the children in a scoped subtree, so document-level CSS can't restyle the button by accident, for example.What is Ng Transclude?
The ng-transclude is a directive that marks the insertion point for the transcluded DOM of the nearest parent directive that uses transclusion. The template we pass in to the directive will replace the element with ng-transclude directive.What is decorator in angular?
A decorator is a function that adds metadata to a class,its members, or its method arguments. Normally prefixed with an '@' For Example consider a angular built-in Decorator Component.What is dependency injection in angular?
Dependency Injection is a software design in which components are given their dependencies instead of hard coding them within the component. AngularJS provides a supreme Dependency Injection mechanism. It provides following core components which can be injected into each other as dependencies.What is Shadow DOM in angular?
Shadow DOM is like a parallel DOM tree hosted inside a component (an HTML element, not to be confused with Angular components), hidden away from the main DOM tree. It is the implementation of the Shadow DOM standard that allows view, style, and behavior encapsulation.What is module in angular?
In Angular, a module is a mechanism to group components, directives, pipes and services that are related, in such a way that can be combined with other modules to create an application. An Angular application can be thought of as a puzzle where each piece (or each module) is needed to be able to see the full picture.What is angular material design?
As per Google, "Material Design is a specification for a unified system of visual, motion, and interaction design that adapts across different devices. Our goal is to deliver a lean, lightweight set of AngularJS-native UI elements that implement the material design system for use in Angular SPAs."What is NgTemplateOutlet?
NgTemplateOutlet is a directive that takes a TemplateRef and context and stamps out an EmbeddedViewRef with the provided context. The context is accessed on the template via let-{{templateVariableName}}=”contextProperty” attributes to create a variable the template can use.What is angular Transclusion?
Transclusion is a very powerful and useful feature of AngularJS directives. It allows a directive to use a template while still having the ability to clone the original content and add it to the DOM. Transclusion allows directives to generate dynamic, data-driven DOM structures that create a compelling user experience.What is the use of NG view in AngularJS?
ngView is a directive that complements the $route service by including the rendered template of the current route into the main layout ( index. html ) file. Every time the current route changes, the included view changes with it according to the configuration of the $route service. 
