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Strings in Depth: JavaScript: Uncharted

Courses JavaScriptStrings in Depth

Strings in Depth

Search, normalize, split, rebuild, and craft text that holds up under real-world input.

JavaScript
Unit 9 of 20
20 lessons
175 min
420 XP

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Lessons

20 total

1Text Is EverywhereRecognize strings as ordered text used throughout everyday apps.InteractiveConcept6 min20 XPOpen
2Find InsideSearch a subject line with includes, indexOf, startsWith, and endsWith.CodeConcept8 min20 XPOpen
3Slice with StyleExtract text from the front and back of a string with slice.CodeConcept8 min20 XPOpen
4Swap the WordsCompare replacing one occurrence with replacing every occurrence.CodeConcept8 min20 XPOpen
5Tidy the InputNormalize a messy email entry with trim and lowercase conversion.CodeConcept7 min20 XPOpen
6Split into PiecesSplit strings into arrays using space and comma separators.CodeConcept8 min20 XPOpen
7Join Them BackSplit a path, transform its pieces, and join them into a breadcrumb.CodeConcept9 min20 XPOpen
8Split Edge CasesPredict how split handles empty pieces and character boundaries.InteractiveConcept8 min20 XPOpen
9Letter by LetterLoop through a string and count its vowel characters.CodeConcept9 min20 XPOpen
10Mirror WritingReverse a string manually by visiting its characters from right to left.CodeConcept9 min20 XPOpen
11Pad to AlignUse padStart to align formatted amounts in a fixed-width receipt column.CodeConcept8 min20 XPOpen
12Multiline MasterpieceBuild an exact multi-line receipt with a template literal.CodeConcept8 min20 XPOpen
13Name-Cleaning PipelineOrder text-cleaning stages so each stage prepares useful input for the next.InteractiveConcept7 min20 XPOpen
14Initials MachineConvert a full name into uppercase initials with a reusable function.CodePractice10 min20 XPOpen
15Word CounterCount words robustly across empty and irregularly spaced text.CodePractice10 min20 XPOpen
16Secret NotesEncode lowercase letters by shifting each one forward with wraparound.CodePractice11 min20 XPOpen
17Method to Job MatchMatch common string methods to the text jobs they perform.InteractiveConcept7 min20 XPOpen
18Username RulesValidate username length, allowed characters, and absence of spaces.CodePractice11 min20 XPOpen
19Title Case MachineNormalize words, capitalize each first letter, and join a title.CodePractice11 min20 XPOpen
20Strings Mastery CheckCombine search, transformation, splitting, joining, and template craft in one formatter.CodeMastery check12 min40 XPOpen

Objects Array Superpowers