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All right, and two things that I would like to emphasize are falling first, remember those errors

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that we were getting in a server when we're standing up, if conditions in JavaScript, if we don't

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explicitly return and of course, JavaScript just keeps reading the code.

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Correct.

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So if I'm going to admit that return, I'm actually going to get the server error where I send back

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one response and then Joske just keeps reading the code and then expresses confused expressions like,

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hey, wait a minute, I already sent back the response.

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So why you're sending another.

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Now, keep in mind that it is happening in the same request.

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So you cannot send basically two responses in the same request, one after another.

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Yeah, of course, you can send one based on conditions.

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For example, if there are no products, you send back one response.

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And if you can yield some products, then great, then you send the second one.

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But you cannot send both of them one after another in the same request.

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And if you want to see that error again in action, go to the query.

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You'll add a question mark here and we're going to go search.

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And again, it is equal to be for example, that is my value.

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That's the starting value that I'm looking for.

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And once I do that, Noticia, I'm getting back the success true and data.

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But again, I have this big fat error in my server and it says that headers after they are sent to the

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client so we can have only one response per request.

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And in order to avoid that, we just go with return.

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So always, always, when you're setting up the condition, make sure that you go with the return so

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that we are returning from our callback function.

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And when we set up over here now where you'll avoid those errors.

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Now, of course, in this case, there is no more code red.

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So, yeah, it is a better practice if you just put this return here, but you won't get the error since

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there's nothing after that.

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And one more thing that I would like to mention normally, you're not going to set up a separate one

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just for the query.

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Yeah, there might be some cases, maybe there's some API to do that.

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But normally, again, you can just add it to where you're getting a list.

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So basically, if there is a query, beautiful, you're maybe going to store that data, you are going

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to filter it, you're going to set up some pages or whatever.

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And if no query string parameters are there, then you send back the whole product.

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And if you take a look.

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Pretty much nothing stops me here from just changing the API and products, and the functionality is

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going to work where if there are some queries from Paramus present, beautiful, notice how we're filtering

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our product.

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If not, then I always send back the product anyway.

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And as you can see, those are just copies of the product that are coming from my data.

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Yes, hopefully that is clear.

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Now, let's move on to our next topic.