What are custom directives?

Angular provides the ability to create our own directives to implement our own custom templates or logic in our web application.

For example: Say you have a template consisting of some text boxes and a submit button which is getting used in every single page of your website. Inorder to reduce the re-work, we can simply create our directive which will produce the template when the custom directive is used as an attribute or an element in an html page. In this way we can create and apply a custom directive whic are very useful.