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JavaScript Lecture

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© Rollpie

JavaScript Lecture
30 May 2025

Unicode

Difference of charCodeAt and codePointAt: How can we get "code point" from Unicode surrogate pair?
28 views31 May 2025

The JS function "charCodeAt(0)" doesn't seem to return the corre...

Surrogate pair regex is a good alternative to split('') when splitting a string by space
37 views31 May 2025

😀 is split to two code points. JavaScript uses UTF-16 and 😀 is...

isWellFormed checks if a string has � or "broken code point"
29 views31 May 2025

We get a "broken" string when splitting incorrectly texts that c...

94views