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Learn Data types in JavaScript

Study Data types with focused JavaScript lessons from Learn JavaScript Online. This topic hub collects 12 lessons in the The JavaScript language section.

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Lessons in this JavaScript topic

  1. 5.1Methods of primitives
  2. 5.2Numbers
  3. 5.3Strings
  4. 5.4Arrays
  5. 5.5Array methods
  6. 5.6Iterables
  7. 5.7Map and Set
  8. 5.8WeakMap and WeakSet
  9. 5.9Object.keys, values, entries
  10. 5.10Destructuring assignment
  11. 5.11Date and time
  12. 5.12JSON methods, toJSON