JavaScript

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• Beginner enemy encounter

  Variables & Types

  160 XP

  Build variables & types fluency through short lessons, quizzes, and raid practice.

  Enter encounter
• Beginner enemy encounter

  Functions

  195 XP

  Build functions fluency through short lessons, quizzes, and raid practice.

  Enter encounter
• Beginner enemy encounter

  Arrays

  230 XP

  Build arrays fluency through short lessons, quizzes, and raid practice.

  Enter encounter
• Beginner enemy encounter

  Objects

  265 XP

  Build objects fluency through short lessons, quizzes, and raid practice.

  Enter encounter
• Beginner enemy encounter

  Loops

  300 XP

  Build loops fluency through short lessons, quizzes, and raid practice.

  Enter encounter
• Intermediate enemy encounter

  DOM

  415 XP

  Build dom fluency through short lessons, quizzes, and raid practice.

  Enter encounter
• Intermediate enemy encounter

  Async / Await

  450 XP

  Build async / await fluency through short lessons, quizzes, and raid practice.

  Enter encounter
• Intermediate enemy encounter

  APIs

  485 XP

  Build apis fluency through short lessons, quizzes, and raid practice.

  Enter encounter
• Intermediate enemy encounter

  ES6+

  520 XP

  Build es6+ fluency through short lessons, quizzes, and raid practice.

  Enter encounter
• Advanced enemy encounter

  Closures

  625 XP

  Build closures fluency through short lessons, quizzes, and raid practice.

  Pro encounter lockedSign in with an active Pro plan to enter this raid.
• Advanced enemy encounter

  Scope

  660 XP

  Build scope fluency through short lessons, quizzes, and raid practice.

  Pro encounter lockedSign in with an active Pro plan to enter this raid.
• Advanced enemy encounter

  Classes

  695 XP

  Build classes fluency through short lessons, quizzes, and raid practice.

  Pro encounter lockedSign in with an active Pro plan to enter this raid.
• Advanced enemy encounter

  Data Structures

  730 XP

  Build data structures fluency through short lessons, quizzes, and raid practice.

  Pro encounter lockedSign in with an active Pro plan to enter this raid.
• Expert enemy encounter

  Algorithms

  855 XP

  Build algorithms fluency through short lessons, quizzes, and raid practice.

  Pro encounter lockedSign in with an active Pro plan to enter this raid.

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• javascriptBeginner

  Orryx, the Index Leviathan

  An armored leviathan guards the indexed depths. His coiled body braces for a jaw-fired torrent that becomes a scarlet storm in his second phase.

• javascriptBeginner

  The Ouroboros Bellkeeper

  A skeletal ring guardian tolls every repeated step. Master loop conditions and control flow before his bell releases its furious returning echoes.

• javascriptIntermediate

  The Pendulum Widow

  A mourning clock spirit suspends every promise. Resolve asynchronous flow before her weighted tentacles release their delayed and converging strikes.

• javascriptBeginner

  Axiom, the Binding Cerberus

  Three snarling heads guard every binding. Break Axiom's brass locks with variables and types, then survive his furious three-throat barrage.

• javascriptBeginner

  Veyra, the Invocation Mantis

  A blade-armed mantis whose precise invocations gather along her hooked scythes. Her original violet eye burns crimson as the duel intensifies.

• javascriptBeginner

  The Property Reliquary

  A walking vault of forbidden properties. Its living keyhole gathers power while the locked drawers shudder before a furious arcane release.

• javascriptIntermediate

  Sylva, the Branchmother

  A rooted lantern guardian binds the document tree. Navigate nodes, events, and updates to survive her branching canopy and awakened greenfire.

• javascriptIntermediate

  The Gatejaw Roc

  A storm-feathered guardian with a living gateway in its armor. Master requests and responses before its crimson gate unleashes a furious counterattack.

• javascriptIntermediate

  The Prism Stag

  A crystal-antlered guardian refracts each modern incantation. Master destructuring, spread, and contemporary syntax before his fractured ribs kindle a crimson charge.

• javascriptAdvancedPRO

  Mnema, the Memory Nautilus

  A floating vault remembers every binding. Unravel captured environments while Mnema coils her ink-dark tentacles around the secrets held in her spiral shell.

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• javascriptAdvancedPRO

  Null Sovereign

  An armored sovereign who commands the boundary between visible and hidden power. Master scope to break his hold, then face his crimson awakening.

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• javascriptAdvancedPRO

  The Inheritance Colossus

  An ancestral stone giant carries the weight of every class that came before. Understand construction and inheritance to withstand his grounded fists and awakened gaze.

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• javascriptAdvancedPRO

  The Rooted Labyrinth

  An ancient stone-backed tortoise carries a maze of linked chambers. Find order in its data structures before the whole labyrinth awakens.

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• javascriptExpertPRO

  The Decision Sphinx

  A rose-gold sphinx weighs every choice through an astrolabe on its tail. Prove your algorithms before its violet judgment becomes a crimson storm.

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