Methods
| Method | Mutates | Description |
| concat | no | |
| copyWithin | mutates | |
| every | ||
| fill | mutates | |
| filter | ||
| find | ||
| findIndex | ||
| forEach | ||
| from | ||
| includes | ||
| indexOf | ||
| join | ||
| lastIndexOf | ||
| length | ||
| map | it will take each item and add it to an array | |
| pop | mutates | removes and displays the last item from the end |
| push | mutates | adds an item to the end |
| reduce | ||
| reduceRight | ||
| reverse | mutates | reverse the order of the items |
| shift | mutates | remove an item from the beginning of an array |
| slice | remove and displays part of the array | |
| some | ||
| sort | mutates | alphabetically sort items. |
| splice | mutates | modifies an array by removing existing elements and/or adding new elements. |
| split | ||
| unshift | mutates | adds an item to the beginning of an array, and returns the new length |
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