Course “JS: Functions”
Course updated on April 29, 2025
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What's included
Description
JavaScript functions go much beyond what you already know! You will learn about first-class objects, lambda functions, and higher-order functions in this course. Learn how to do the "mapping", "filtering", and "aggregation" operations, as well as how to pass and take an infinite number of arguments. Learn about external libraries that make programming much simpler.
You will learn
- Use advanced function capabilities to write concise and efficient code
- Separate pure functions from those with side effects
- Use higher-order functions (map/filter/reduce) to handle collections
- Recognize the imperative and declarative (functional) paradigms
Syllabus
1 | About course Learn about the course, its structure, objectives, and goals |
2 | Pure functions Learn about the concepts of determinism and side effects |
3 | Command–query separation Meet the CQS principle |
4 | Rest parameter syntax (packing arguments) Learn how to use the rest syntax to form an array from function arguments |
5 | Spread syntax (unpacking arguments) Learn how to use the spread syntax with a function call |
6 | Parameter destructuring Learn how to apply the destructuring assignment for function parameters |
7 | First-class objects Consider functions as data. Learn about arrow functions |
8 | Higher-order functions Learn how to build abstractions using functions |
9 | Mapping Learn how to use the map method |
10 | Filtering Learn how to use the filter method |
11 | Reducing Learn how to use the reduce method |
12 | Signals Come to grips with the concept of standard interface |
13 | Programming paradigms Become familiar with the "paradigm" concept and examine the differences between imperative and declarative paradigms |
14 | Building abstraction using functions Summarize knowledge about functions and get to grips with the concept of abstraction |
Challenges
1 | Configuration parsing |
2 | NRZI encoding |
3 | Vertical histogram |
4 | Sea Battle 2 |
5 | IP converter |
6 | Anagrams filter |
7 | Horizontal histogram |
8 | Coeval counter |
9 | Merging dictionaries |
10 | Same parity |
11 | Color model conversion |
12 | Bar chart |
13 | IPv6 validator |
- Run code right in the browser
- Lifetime access
- Learn at your own pace
Access this and all courses with a subscription