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Thus far in this course you obviously learned a lot about Javascript and we did dive into Javascript

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in the context of the browser.

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In this module, we'll now have a look at a different environment where Javascript code can be used

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and that's Node.js, a Javascript environment that allows us to run Javascript outside of the browser.

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Now

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really important to understand here is that what you learned thus far is of course not obsolete,

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it's the same language, the same syntax, the same keywords,

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functions are defined in the same way, variables are defined in the same way,

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the difference of course is that we won't have access to all these browser APIs, to the DOM and

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so on but I will dive into that in more detail in this module.

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Well to be precise in this module, we'll have a look at what exactly Node.js is and how it differs

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from the browser as a Javascript environment.

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We'll then of course learn how to write Node.js code, how to write basic Node.js scripts and applications,

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how to host a server with Node.js but also how to do something totally different with Node.js and

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we'll also explore Express.js which is a framework for Node.js that makes building more complex

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Node.js applications, specifically web servers, much easier.

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Last but not least, we'll also have a look at how we can talk to a database and store data, not just in

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memory of Javascript and not in the browser storage which every user can see but instead how to store data

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on a separate database server.

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That's what we'll have a look at in this module and therefore let's not waste any time and dive right

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in.