Table of Contents
- 1 What is the use of custom directive in AngularJS?
- 2 What are the most common directives used in AngularJS applications?
- 3 What is directive in AngularJS with example?
- 4 When would you use a custom directive?
- 5 Can we create custom directive in AngularJS?
- 6 What is directive in angular with example?
- 7 What are AngularJS directives and how to use them?
- 8 What is compiling in AngularJS?
What is the use of custom directive in AngularJS?
Custom directives are used in AngularJS to extend the functionality of HTML. Custom directives are defined using “directive” function. A custom directive simply replaces the element for which it is activated.
Why do we need custom directives in Angular?
Directives are the functions which will execute whenever Angular compiler finds it. Angular Directives enhance the capability of HTML elements by attaching custom behaviors to the DOM.
What are the most common directives used in AngularJS applications?
Following are the most common directives:
- ng-app: This directive starts an AngularJS Application.
- ng-init: This directive initializes application data.
- ng-model: This directive defines the model that is variable to be used in AngularJS.
- ng-repeat: This directive repeats html elements for each item in a collection.
Where AngularJS directives are used?
This directive automatically initializes the AngularJS application on page load. It can be used to load various modules in AngularJS Application….AngularJS | Directives.
| Directives | Description |
|---|---|
| ng-init | Used to initialise a variable |
| ng-model | ng-model is used to bind to the HTML controls |
| ng-controller | Attaches a controller to the view |
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. |
What are Angular directives used for?
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 .
When would you use a custom directive?
Attribute directive also called custom directives are used when no additional template is needed. The directive can execute logic and apply visual changes to the element it is applied to. This is useful if you want to alter the behavior or style of existing HTML-elements, without wrapping them into a new component.
Can you describe some of the advantages of using Angular?
Angular is built with TypeScript. The main advantage of this strongly typed language is that it helps developers to keep their code clean and understandable. Bugs are easier to spot and eliminate with the ability to see common errors as you type.
Can we create custom directive in AngularJS?
The directive allows you to create custom tags in AngularJS. By adding existing or custom Angular Directives, one can get the functionality work in the application. Technically AngularJS tells the browser while compiling, to attach behavior to the element or transform the DOM element.
What is the role of AngularJS expressions justify with suitable example?
Expressions are used to bind application data to HTML. Expressions are written inside double curly braces such as in {{ expression}}. AngularJS expressions are pure JavaScript expressions and output the data where they are used. …
What is directive in angular with example?
AngularJS Directives
| Directive | Description |
|---|---|
| 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. |
| ng-readonly | Makes HTML element read-only based on the value of the specified expression. |
How do you use a directive?
At the core, a directive is a function that executes whenever the Angular compiler finds it in the DOM. 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.
What are AngularJS directives and how to use them?
There are available directives in AngularJS, which are very useful; we can also define our own custom directives and use them. Custom directives allow developers great flexibility and freedom. Directives add new functionality into existing HTML with innovative style and features. This is a guide to AngularJS Directives.
What does nG-model do in AngularJS?
The ng-model directive binds the value of HTML controls (input, select, textarea) to application data. Read about all AngularJS directives in our AngularJS directive reference.
What is compiling in AngularJS?
For AngularJS, “compilation” means attaching directives to the HTML to make it interactive. The reason we use the term “compile” is that the recursive process of attaching directives mirrors the process of compiling source code in compiled programming languages. Matching Directives
What is the nG-model directive used for?
The ng-model directive binds the value of HTML controls (input, select, textarea) to application data. The ng-model directive can also: Provide type validation for application data (number, email, required). Provide status for application data (invalid, dirty, touched, error). Provide CSS classes for HTML elements. Bind HTML elements to HTML forms.