How protoractor works

how-protractor-works.md

• The methods like element(), element.all() and element().fisrt() return element finders instead of elements. At this time, element finding is not performed yet. So the element finders are reusable even when the page state changes.
• The action methods like element().click(), element().getText() and element.count() return promises. At this time, element finding and action are not performed yet. They register actions to a queue in order.
• The actions in the queue are executed one by one. When executed, element finding and the action are performed. Between actions, protractor waits for Angular to finish $digest loop and $http requests.