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## 3 Directions
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### Accessing an array value `[index]`
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Since numbers are not valid identifiers we can not use the `.` operator to
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access a value in an array, but we can use the `[index]` square brackets to
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access a value.
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Example:
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```js
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let numberList = [10, 20, 30, 40]
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console.log(numberList[0]) // -> 10
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console.log(numberList[3]) // -> 40
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console.log(numberList[6]) // -> undefined
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```
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Since we start at `0`, `[0]` will get the value at the first index.
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> note that if we try to access an element that doesn't exist we will get
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> `undefined` as a value, just like non existing properties for an object.
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#### Using the `.length` property
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Another difference of the arrays is that they always keep track of how many
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elements are inside them.
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You can use the `.length` property to get this value:
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```js
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console.log([].length) // -> 0
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console.log([1].length) // -> 1
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console.log([1, 1, 1, 1].length) // -> 4
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```
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### Instructions
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We provide you a variable `list` that contains some elements, you will have to
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access them and assign their values to variables:
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- a variable `first` of the first element of the `list`
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- a variable `last` of the last element of the `list`
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- a variable `kiss` of an array of 2 elements, the last and the first element of
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the `list`, in that order.
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> 🧑🎤 ............ Oh, ........... 🧑🎤
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> 🎶 .. I wanna be last, yeah ... 🎶
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> 🎵 . Baby let me be your last . 🎵
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> ✨ ... Your last first kiss ... ✨
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> ― One Direction
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