Javatpoint Logo
Javatpoint Logo

AngularJS Directives

AngularJS facilitates you to extend HTML with new attributes. These attributes are called directives.

There is a set of built-in directive in AngularJS which offers functionality to your applications. You can also define your own directives.

Directives are special attributes starting with ng- prefix. 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.

ng-app directive

ng-app directive defines the root element. It starts an AngularJS Application and automatically initializes or bootstraps the application when web page containing AngularJS Application is loaded. It is also used to load various AngularJS modules in AngularJS Application.

See this example:

In following example, we've defined a default AngularJS application using ng-app attribute of a div element.


ng-init directive

ng-init directive initializes an AngularJS Application data. It defines the initial values for an AngularJS application.

In following example, we'll initialize an array of countries. We're using JSON syntax to define array of countries.


ng-model directive:

ng-model directive defines the model/variable to be used in AngularJS Application.

In following example, we've defined a model named "name".


ng-repeat directive

ng-repeat directive repeats html elements for each item in a collection. In following example, we've iterated over array of countries.

AngularJS directives Example

Let's take an example to use all the above discussed directives:

Test it Now

AngularJS Directives List

AnglarJS directives are used to add functionality to your application. You can also add your own directives for your applications.

Following is a list of AngularJS directives:

Directive Description
ng-app It defines the root element of an application.
ng-bind It binds the content of an html element to application data.
ng-bind-html It binds the inner HTML of an HTML element to application data, and also removes dangerous code from the html string.
ng-bind-template It specifies that the text content should be replaced with a template.
ng-blur It specifies a behavior on blur events.
ng-change It specifies an expression to evaluate when content is being changed by the user.
ng-checked It specifies if an element is checked or not.
ng-class It specifies css classes on html elements.
ng-class-even It is same as ng-class, but will only take effect on even rows.
ng-class-odd It is same as ng-class, but will only take effect on odd rows.
ng-click It specifies an expression to evaluate when an element is being clicked.
ng-cloak It prevents flickering when your application is being loaded.
ng-controller It defines the controller object for an application.
ng-copy It specifies a behavior on copy events.
ng-csp It changes the content security policy.
ng-cut It specifies a behavior on cut events.
ng-dblclick It specifies a behavior on double-click events.
ng-focus It specifies a behavior on focus events.
ng-hide It hides or shows html elements.
ng-href It specifies a URL for the <a> element.
ng-if It removes the html element if a condition is false.
ng-include It includes html in an application.
ng-init It defines initial values for an application.
ng-jq It specifies that the application must use a library, like jQuery.
ng-keydown It specifies a behavior on keydown events.
ng-keypress It specifies a behavior on keypress events.
ng-keyup It specifies a behavior on keyup events.
ng-list It converts text into a list (array).
ng-open It specifies the open attribute of an element.
ng-options It specifies <options> in a <select> list.
ng-paste It specifies a behavior on paste events.
ng-pluralize It specifies a message to display according to en-us localization rules.
ng-readonly It specifies the readonly attribute of an element.
ng-required It specifies the required attribute of an element.
ng-selected It specifies the selected attribute of an element.
ng-show It shows or hides html elements.
ng-src It specifies the src attribute for the <img> element.
ng-srcset It specifies the srcset attribute for the <img> element.
ng-style It specifies the style attribute for an element.
ng-submit It specifies expressions to run on onsubmit events.
ng-switch It specifies a condition that will be used to show/hide child elements.
ng-transclude It specifies a point to insert transcluded elements.
ng-value It specifies the value of an input element.
ng-disabled It specifies if an element is disabled or not.
ng-form It specifies an html form to inherit controls from.
ng-model It binds the value of html controls to application data.
ng-model-options It specifies how updates in the model are done.
ng-mousedown It specifies a behavior on mousedown events.
ng-mouseenter It specifies a behavior on mouseenter events.
ng-mouseleave It specifies a behavior on mouseleave events.
ng-mousemove It specifies a behavior on mousemove events.
ng-mouseover It specifies a behavior on mouseover events.
ng-mouseup It specifies a behavior on mouseup events.
ng-non-bindable It specifies that no data binding can happen in this element, or it's children.
ng-repeat It defines a template for each data in a collection.

How to add directives

See this example:

Test it Now



Please Share

facebook twitter google plus pinterest

Learn Latest Tutorials


Preparation


B.Tech / MCA