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Now that's it for this course section.

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We now had a thorough introduction into Express,

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which is a super important library for working with Node,

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and it's one of the most popular

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and commonly used NodeJS libraries that exists in the world.

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It's getting used by hundreds of thousands

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of developers every day.

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And now we got started with it.

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And you learned that Express,

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this library, is mainly dealing with routing requests.

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So with determining which path are request targets

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and which type of request it is,

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to then execute code for those different requests.

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And with help of Express,

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we can then send back tailored responses.

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We can send back responses that

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include dynamically generated data, if we need to.

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And we can also parse request data

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in case we get a post request that does carry such data,

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as long as we also add to this extra middleware,

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that was an important step,

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so that we also explicitly tell Express that

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it should parse and translate any data

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that might be attached to incoming requests.

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Now,

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we did also learn in this course section

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how we can then send back HTML content,

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at the moment, just stored in such strings,

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not in HTML files,

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but that will also change again in the future.

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And we learned that we can write and read to and from files.

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And that's of course not Express specific,

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but NodeJS in general,

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but we can utilize this when working with Express as well.

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And that's important to keep in mind

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and understand in general.

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Express does not replace NodeJS, instead it enhances it.

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We can now still use some core NodeJS functionalities,

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but we don't have to do everything

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in such a low level way as we did it before,

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where we manually had to check what our URL is and so on.

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Instead now we have a more structured

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and easier way of splitting our code

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and defining which code should execute

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for which kind of request.

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And we can then write any kind of logic

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our website might need.

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Now, last but not least,

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we also added NodeMon in the last lecture

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to make our life as a developer a bit easier.

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Now with all of that,

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we got a very solid foundation

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on which we can build up on

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to dive deeper into Express and Node.

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And to now in the next lecture,

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re-introduce separate HTML files,

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but this time, a bit more dynamic

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than the HTML files we worked on before in this course.