JavaScript: Arrays

Introduction

• So many ways to work with arrays
• What you should know

1. Arrays: The Basics

• Arrays overview
• Length property and direct assignment
• forEach for ease and readability
• Solution: Basic array methods 1
• Solution: Basic array methods 2

2. Working with Ordered Data

• Order arrays with sort
• Reverse array order with reverse
• Find a single element with find and findIndex
• Solution: Working with ordered data 1
• Solution: Working with ordered data 2

3. Evaluating Data for a Single Value

• Does the array Include an element?
• Do elements pass a test?
• Solution: Evaluating single value 1
• Solution: Evaluating single value 2

4. Implementing Stacks and Queues

• The end: Push and pop data
• The beginning: Unshift and shift data
• Solution: Implementing stacks and queues 1
• Solution: Implementing stacks and queues 2

5. Bringing It Together: Advanced Methods

• Reformat data with map
• Filter data with filter
• Single values with reduce
• Flat + map = flatMap
• Solution: Advanced methods 1
• Solution: Advanced methods 2

Conclusion

• Next steps