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How do websites store state across page loads?
Most major modern websites are dynamic — they store data on the server using some kind of database (server-side storage), then run server-side code to retrieve needed data, insert it into static page templates, and serve the resulting HTML to the client to be displayed by the user's browser.
How to get data from client to server in JavaScript?
The simplest use of fetch() takes one argument — the path to the resource you want to fetch — and returns a promise containing the response (in the form of a JavaScript object). To extract the JSON body content from the response, we use the JSON. stringify(myJson) method.
