What does $compile do in AngularJS?

Compiles an HTML string or DOM into a template and produces a template function, which can then be used to link scope and the template together. The compilation is a process of walking the DOM tree and matching DOM elements to directives.Click to see full answer. Correspondingly, how AngularJS is compiled?Compiler is an AngularJS service which traverses the DOM looking for attributes. The compilation process happens in two phases. Compile: traverse the DOM and collect all of the directives. Link: combine the directives with a scope and produce a live view.Subsequently, question is, what is $Watch in AngularJS? When you create a data binding from somewhere in your view to a variable on the $scope object, AngularJS creates a “watch” internally. A watch means that AngularJS watches changes in the variable on the $scope object. The framework is “watching” the variable. Watches are created using the $scope. Hereof, what is the difference between compile and link function in AngularJS? Compile – It traverses the DOM and collects all of the directives. The result is a linking function. Link – It combines the directives with a scope and produces a live view. Any changes in the scope model are reflected in the view, and any user interactions with the view are reflected in the scope model.What is Link function in AngularJS?AngularJS Directive’s link key defines link function for the directive. Precisely, using link function, we can define directive’s API & functions that can then be used by directive to preform some business logic. The link function is also responsible for registering DOM listeners as well as updating the DOM.