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Code Completion 8 Challenges

Complete the JavaScript Unicode String Code

Practice code-point iteration, well-formedness, normalization, and Unicode-aware String APIs.

Intermediate ~8 min read

Challenge 1

Return an array of code-point strings.

javascript Your answer 
function codePoints(text) {
  return ;
}

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Challenge 2

Create a string from U+1F600.

javascript Your answer 
const value = ;

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Challenge 3

Check whether text is well-formed UTF-16.

javascript Your answer 
const ok = text.();

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Challenge 4

Repair unpaired surrogates before sending text onward.

javascript Your answer 
const safe = text.();

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Challenge 5

Compare canonically equivalent text after NFC normalization.

javascript Your answer 
const same = left.("NFC") === right.normalize("NFC");

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Challenge 6

Iterate by code point.

javascript Your answer 
for (const part  text) {
  console.log(part);
}

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Challenge 7

Read the ECMAScript String length.

javascript Your answer 
const units = text.;

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Challenge 8

Read a code point at a String position.

javascript Your answer 
const cp = text.(index);

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