what is the use of node js in angular code example

Example: what is the use of angularjs

AngularJS is a structural framework for dynamic web applications. 
It lets you use HTML as your template language and lets you extend HTML's 
syntax to express your application components clearly and succinctly. 
Its data binding and dependency injection eliminate much of the code you
currently have to write.

Software genre: Web framework
Languages used: JavaScript