Can we create custom directive in AngularJS?
Can we create custom directive in AngularJS?
AngularJS provides support to create custom directives for following type of elements. Element directives − Directive activates when a matching element is encountered. Attribute − Directive activates when a matching attribute is encountered. CSS − Directive activates when a matching css style is encountered.
What is directive in AngularJS with example?
AngularJS Directives
| Directive | Description |
|---|---|
| ng-bind | Replaces the value of HTML control with the value of specified AngularJS expression. |
| ng-repeat | Repeats HTML template once per each item in the specified collection. |
| ng-show | Display HTML element based on the value of the specified expression. |
Can we create custom directive in AngularJS True False?
AngularJS comes with a set of these directives built-in, like ngBind , ngModel , and ngClass . Much like you create controllers and services, you can create your own directives for AngularJS to use.
How do I create a custom directive?
To create a custom directive we have to replace @Component decorator with @Directive decorator. So, let’s get started with creating our first Custom Attribute directive. In this directive, we are going to highlight the selected DOM element by setting an element’s background color. Create an app-highlight.
What is injector in AngularJS?
AngularJS injector is key to making dependency injection work in Angular. The angular. injector() function is used to create injector object for dependency injection and services retrieving. Using injector, you can register factory, service and directive modules methods. Syntaxangular.
How do you write a directive?
The rules for effective directive writing are below.
- Provide Clear Instructions. Once you have a clear idea of what you want to achieve – write it clearly.
- Be Concise and to the Point.
- Create Your Plan Step-by-Step.
- One Issue Per Directive.
- When in Doubt, Refer to Your Previous Directives.
- Use Exact Numbers.
What are different types of directives in Angular?
The three types of directives in Angular are attribute directives, structural directives, and components.
Can we use HostListener in component?
HostListener listens to host events, while HostBinding allows us to bind to a property of the host element. The host is an element on which we attach our component or directive.
What is ElementRef in Angular?
Angular ElementRef is a wrapper around a native DOM element (HTML element) object. It contains the property nativeElement , which holds the reference to the underlying DOM object. We can use it to manipulate the DOM. We use the ViewChild to get the ElementRef of an HTML element in the component class.
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.
What is @inject in Angular?
@Inject() is a manual mechanism for letting Angular know that a parameter must be injected. It can be used like so: 1. import { Component, Inject } from ‘@angular/core’; 2.
