Fetching from a Server

There is a common question among developers when the are building a new web app. Where should we fetch our data from? If we are calling an external API do we pull data on the backend or front-end. To explain it a little deeper imagine if this is our code.

javascript $(".review").on("click", function (event) { event.preventDefault() let id = $(this).data("id") fetch(`www.someurl.com/books/${id}.json`).then(res => res.json()) .then(data =>{console.log(data)} }} )

When the user loads the page and creates the dom (and clicks the button) only then does the Js fire; meaning whose computer just made that request the users. However, if we were to be fetching that external API on the back-end even though the user triggered the server to fetch but whose computer actually fetched the data the server.

This might be confusing but is important lesson to understand so even if doesn’t make sense don’t give up.

Signing off

Sim Greenbaum

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