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Track 03 / 08Available

JSAtoms

JavaScript

Language fundamentals, control flow, arrays, functions and browser logic.

Understand JavaScript from values to working systems.

63

lessons

5

topics

Start this track →

01 / roadmap

Knowledge map

Lessons are arranged as connected nodes. Follow them in order or jump directly to a concept.

01

Data Core

15 lessons

JS-001Variables→JS-002let vs const→JS-003Primitive Types→JS-004Number→JS-005String→JS-006Boolean→JS-007null→JS-008undefined→JS-009typeof→JS-010Dynamic Typing→JS-011Value vs Variable→JS-012Reassignment→JS-013Naming Variables→JS-014Comments→JS-015console.log()→

02

Expressions & Operators

15 lessons

JS-016Expression→JS-017Statement→JS-018Assignment Operator =→JS-019Plus Operator +→JS-020Math Operators→JS-021Remainder %→JS-022Increment ++→JS-023Decrement --→JS-024String Concatenation→JS-025Template Literals→JS-026Operator Precedence→JS-027Type Conversion→JS-028Number()→JS-029String()→JS-030Boolean()→

03

Comparisons & Logic

12 lessons

JS-031Comparison→JS-032== vs ===→JS-033!= vs !==→JS-034Greater / Less→JS-035NaN→JS-036Truthy→JS-037Falsy→JS-038Logical AND &&→JS-039Logical OR ||→JS-040Logical NOT !→JS-041Nullish Coalescing ??→JS-042Optional Chaining ?.→

04

Control Flow

8 lessons

JS-043if→JS-044else→JS-045else if→JS-046Nested if→JS-047Ternary Operator→JS-048switch→JS-049Guard Clause→JS-050Early Return→

05

Collections

13 lessons

JS-051Array→JS-052Array Index→JS-053Array Length→JS-054push()→JS-055pop()→JS-056shift()→JS-057unshift()→JS-058includes()→JS-059indexOf()→JS-060slice()→JS-061splice()→JS-062for...of→JS-063map()→

02 / progress architecture

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