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What is AngularJS directive?

AngularJS directives are extended HTML attributes with the prefix ng-. The ng-app directive initializes an AngularJS application. The ng-init directive initializes application data. The ng-model directive binds the value of HTML controls (input, select, textarea) to application data.

How many types of directives are there in AngularJS?

Types of Directive in AngularJS There are two types of AngularJs directives: Built-in directive.

How does angular directive work?

Angular directives are used to extend the power of the HTML by giving it new syntax. Each directive has a name — either one from the Angular predefined like ng-repeat, or a custom one which can be called anything. And each directive determines where it can be used: in an element, attribute, class or comment.

What is HTML directive?

What are Directives? At a high level, directives are markers on a DOM element (such as an attribute, element name, comment or CSS class) that tell AngularJS’s HTML compiler ( $compile ) to attach a specified behavior to that DOM element (e.g. via event listeners), or even to transform the DOM element and its children.

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What is the meaning of directives *?

directive. noun. Definition of directive (Entry 2 of 2): something that serves to direct, guide, and usually impel toward an action or goal especially, government: an authoritative order or instrument issued by a high-level body or official a presidential directive.

Why do we use directives in AngularJS?

AngularJS directives allow us to literally “direct” AngularJS to associate user-defined behaviors with a DOM element – giving great flexibility in creating and using custom elements in Web applications.

What is the difference between controller and link in directives?

Answer:The link option is just a shortcut to setting up a post-link function. controller: The directive controller can be passed to another directive linking/compiling phase. It can be injected into other directices as a mean to use in inter-directive communication.

What are directives What are IT types?

Components—directives with a template. This type of directive is the most common directive type. Attribute directives —directives that change the appearance or behavior of an element, component, or another directive. Structural directives—directives that change the DOM layout by adding and removing DOM elements.

What is restrict in AngularJS directive?

AngularJS Directive’s restrict key defines how a directive can be used in HTML. In previous post, our directive was created to be used as an attribute of an existing element, like <div item-widget> which is the default behavior.

What is the module in AngularJS?

A module in AngularJS is a container of the different parts of an application such as controller, service, filters, directives, factories etc. It supports separation of concern using modules.

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What is CLI in Angular?

The Angular CLI is a command-line interface tool that you use to initialize, develop, scaffold, and maintain Angular applications directly from a command shell.

What is isolated scope in AngularJS?

Isolated scope directive is a scope that does not inherit from the parent and exist on its own. Scenario: Lets create a very simple directive which will show the object from the parent controller.

What is ng init in AngularJS?

The ng-init directive is used to initialize an AngularJS Application data. It defines the initial value for an AngularJS application and assigns values to the variables. The ng-init directive defines initial values and variables for an AngularJS application.

What is a directive CSS?

As you can see, a directive is simply implemented as a function which returns an object. E: Element – the directive is used as an HTML tag. A: Attribute – the directive is used as an HTML attribute. C: Class – the directive is used as a CSS class (in an element’s class=”” definition)

What is Ng means in Angular?

The prefix ng stands for “Angular;” all of the built-in directives that ship with Angular use that prefix. Similarly, it is recommended that you do not use the ng prefix on your own directives in order to avoid possible name collisions in future versions of Angular.

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