There are several REST api defined which helps in getting quick responses from the servers.Here, I have listed them few on which I have worked upon.
1.To get the details of the Links present in the Top Navigation Bar:
2.To get the details of the Links present in the Current Navigation Bar:
3.To get the Current User Profile Pic of the same SP site:
This method is used when accessing from same SP, incase of CORS a request executor is used and the URL too changes and it isn’t a REST call.
4.To get fields from the List:
5.To get itemsfrom the List:
6.To get all lists from the SP site: