Definition – AngularJS directive adds angularJS functionalities to HTML.

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AngularJs Directives introduces AngularJS to HTML.

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AngularJs Directives enables AngularJs to work with HTML.

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AngularJs Directives allows HTML to extend with AngularJS attributes.

Syntax – ng-

AngularJS Directive-  There are total 55 Directives and we can also create our own directives.
Most Useful directives are following :

• ng-app: Starts an AngularJS Application.
• ng-init: Initializes data.
• ng-model: A variable to be used in AngularJS.
• ng-repeat: Repeats for each item in a collection.