Array Methods
Transform and search data with map, filter, reduce, find and sort.
What you'll learn
- Transform arrays with map
- Pick items with filter and find
- Summarize data with reduce
- Sort arrays of objects safely
About this course
In two weeks you practice the array methods you use every day. Exercises use a product list, so each method solves a real task.
Course curriculum
3 modules and 9 lessons over 2 weeks. Plan for about 6 learning hours.
01TransformingWeek 1 · 3 lessons
- forEach and map
- Returning new arrays
- Chaining
02SearchingWeek 1 · 3 lessons
- filter
- find and findIndex
- some and every
03SummarizingWeek 2 · 3 lessons
- reduce
- sort with compare functions
- Exercise set
Project
Product list exercises. Twelve tasks on a product dataset, such as totals, filters and sorted views.
Who this course is for
Learners who use for loops for everything.
Prerequisites
You know JavaScript arrays, objects and functions.
What's included
- 90-day course access
- Guided lessons
- Coding exercises
- Starter files
- Solution examples
- A digital completion certificate
Learning format
Self-paced mini-course, part of our self-paced courses. Guided lessons, exercises and student support.
Access and delivery
- Digital access is activated within 15 minutes after successful payment.
- Student support replies are targeted within 2 business days.
- The completion certificate is issued within 2 business days after the final exercise is submitted.
Certificate
You receive a digital completion certificate. The completion certificate is issued within 2 business days after the final exercise is submitted.
Frequently asked questions
When does access start?
Digital access is activated within 15 minutes after successful payment.
Is payment taken on this website?
No. After you submit your enrollment request, we reply by email with payment details and enrollment confirmation.
Does this course guarantee a job or income?
No. It is an education and training service and does not include employment, income or placement guarantees.
Can I cancel?
Our Refund and Cancellation Policy lists the terms for self-paced mini-course programs.
