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Let's take a step back from the web page, from working with the DOM into more Javascript theory or into

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important data structures you have in Javascript.

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To be precise, let's have a closer look at arrays and iterables

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in this module. Now of course, we already worked with arrays but always in the very basic way,

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turns out there are many interesting things you can do with arrays,

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many things you can know and therefore,

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that's exactly what we'll have a look at in this module. In detail,

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we'll have a look at different ways of creating arrays, we'll have a look at how to work with arrays,

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how to manipulate them, how to add or remove items,

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what's special about them and how they behave.

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We'll have a look at a lot of important array methods which exist on arrays in Javascript, that help

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us transform array data, summarize array data, sort arrays and all kinds of stuff

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and we'll also have a look at other important iterables which you'll find in Javascript, namely maps

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and sets

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and I will also clarify what iterable actually mean.

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Well let's start with that right away.