Code Lab BetaBUILD. RUN. DISCOVER.

Code Lab is in development. New lessons and improvements are on the way. Progress can be deleted.

JAVASCRIPT / CHAPTER 03

JavaScript
Text.

Text in JavaScript: index, methods, template literals, while, sort/copy, and a report. Learn and Practice per lesson; challenges are separate.

Choose a section

Lesson with explanation and a guided task. Theory stays readable; completion requires a passing solution.

Challenges are optional and do not block the next chapter.

Start lesson
JavaScript

9 lessons available

The foundations behind your ideas.

  1. 01

    String Index · Locked

    index + .length

    Open lesson
  2. 02

    String Methods · Locked

    trim, includes, slice

    Open lesson
  3. 03

    Split / Join · Locked

    split + join

    Open lesson
  4. 04

    Template Literals · Locked

    `text ${expr}`

    Open lesson
  5. 05

    While Control · Locked

    while, break, continue

    Open lesson
  6. 06

    Counters / Search · Locked

    count and search with loops

    Open lesson
  7. 07

    Numeric Sort · Locked

    sort with comparator

    Open lesson
  8. 08

    Copy vs Mutate · Locked

    slice/spread + sort

    Open lesson
  9. 09

    Text Report · Locked

    strings + loops + sort/copy

    Open lesson
JavaScript Text — strings, loops, and a report | Code Lab