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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.
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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.
9 lessons available
The foundations behind your ideas.
- 01Open lesson
String Index · Locked
index + .length
- 02Open lesson
String Methods · Locked
trim, includes, slice
- 03Open lesson
Split / Join · Locked
split + join
- 04Open lesson
Template Literals · Locked
`text ${expr}`
- 05Open lesson
While Control · Locked
while, break, continue
- 06Open lesson
Counters / Search · Locked
count and search with loops
- 07Open lesson
Numeric Sort · Locked
sort with comparator
- 08Open lesson
Copy vs Mutate · Locked
slice/spread + sort
- 09Open lesson
Text Report · Locked
strings + loops + sort/copy