๐จโ๐ผ Fantastic! You can now work with collections of data!
You've learned:
- ๐ Creating arrays - Using
[]syntax - ๐ Accessing elements - Using index notation
[0],[1], etc. - ๐ ๏ธ Array methods -
push,pop,length,includes - ๐ Iteration -
forEach,map,filterfor processing arrays
Key takeaways:
- Arrays are zero-indexed (first element is at index 0)
maptransforms each element and returns a new arrayfilterselects elements that match a condition- These methods don't modify the original array (they're "immutable")
๐ Array methods are used everywhere in JavaScript, especially in React and
other frameworks. Master them and you'll be much more productive!