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ABHINAV VERMA
6,033 PointsLazy loading from the server
I wanted to know how does the load on scroll method of facebook and twitter work. how do they keep fetching data and is the process stateless. What needs to be done at the server level and at the client level.
2 Answers
Steven Parker
231,271 PointsI don't know the specifics of those services, but most likely what you describe is implemented using AJAX, which allows additional server requests to be made without a complete page refresh. There's an AJAX Basics course available if you're interesting in learning how to use this technology.
ABHINAV VERMA
6,033 PointsI am aware of the basics of AJAX. in the AJAX basics course towards the end the teacher suggests creating a search in which the old photos are not fetched and instead new photos are fetched. That's what I want to do . e.g if I've fetched few rows from a database , I don't want the new ajax request to fetch the same rows. I'm confused as to how to achieve in a stateless request.
Steven Parker
231,271 PointsThe request may be "stateless", but it can still convey specific values in a query string or POST data.