Most of the AngularJS functionality that you need to implement in HTML elements is provided in the built-in directives. These directives are provided by the library and are available when the AngularJS JavaScript library is loaded.
Directives provide a wide variety of support for AngularJS applications. The following sections describe most of the AngularJS directives, which fall into the following categories:
Directives that support AngularJS functionality
Directives that extend form elements
Directives that bind the scope to page elements
Directives that bind page events to controllers
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