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JavaScript
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Learn JavaScript

The language of the web, from the MDN guide.

Novus Learn curates the order and cites the official docs for each step — it does not rewrite the material. Open each doc to read the real source, or turn any step into a source-grounded breakdown.

MDN JavaScript Guide Back to the written JavaScript course

0 of 8 steps done

Mark Grammar and types done
Grammar and typesbeginner
MDN — Grammar and types
javascript variables let const var javascript data types
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Mark Control flow and error handling done
Control flow and error handlingbeginner
MDN — Control flow and error handling
javascript if else try catch javascript throw
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Mark Loops and iteration done
Loops and iterationbeginner
MDN — Loops and iteration
javascript for loop for of for in while loop
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Mark Functions and scope done
Functions and scopebeginner
MDN — Functions
javascript functions arrow functions closures
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Mark Working with objects done
Working with objectsintermediate
MDN — Working with objects
javascript objects object properties this keyword
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Mark Arrays and collections done
Arrays and collectionsintermediate
MDN — Indexed collections
javascript arrays map filter reduce array methods
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Mark Asynchronous JavaScript and promises done
Asynchronous JavaScript and promisesadvanced
MDN — Using promises
javascript promises async await then catch
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Mark Modules done
Modulesadvanced
MDN — JavaScript modules
javascript modules import export es modules
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