The MDN tutorial isn’t bad either, so check it out if you need another take on the subject.
Besides being a quick and handy way to store data, arrays also have a set of functions for manipulating that data in very powerful ways. Once you begin to master these functions you will start to see ways to use them all over the place! There are really only a handful of these functions… but as you’ll soon see, the possibilities of what you can do with them are near endless.
Objectives of these section:
Learn about the forEach Array method
Learn about the filter Array method
Learn about the map Array method
Learn about the sort Array method
Learn about the reduce Array method
Duration: 24 minutes
- Watch and code with
Part 2of Wes Bos’s array series.
Duration: 8 minutes
You have been through a ton of content, and it would not be surprising if you were feeling rather overwhelmed at this point. Let’s take a little time to slow down and practice this stuff with more coding exercises. I’ll warn you now: some of these get pretty difficult, but if you’ve done the lessons you should have covered everything you need to know to solve them. Don’t be afraid to go back and review if you find that you can’t remember something, that’s part of the process. If you get stuck reach out for help in the usual channels.
Go to the Exercises Repository and follow the instructions on how to complete and submit the exercise.
Exercism – Uses a neat command-line interface to download and submit exercises and allows you to give and get feedback on your solutions.
CodeWars – A neat gamified system with leveled exercises. As you complete more exercises you level up and access more difficult ones.
HackerRank – Similar in setup to CodeWars, but this site is more focused on interview question type tasks. Some companies even use this site to interview candidates.
LOOKING FOR HELP?
When looking for help, try doing so in the following order:
- Did you try everything you could?
- Did you read the documentation?
- Did you Google for it?
- Did you post your question on Slack/Forum?
- Did you ask your fellow students for help?
- Did you ask your Mentors for help?
- Did you leave a comment on the comments section of this page?
- Did you ask your Instructor for help?