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using the replace() method to remove trailing zeros. this one uses an if..else statement, the toUpperCase() method, and more kata link: ... this one uses the conditional (ternary) operator and the Boolean() constructor kata link: ... this is done with a template literal and the toFixed() method. template literals, map(), Array() constructor, and more. this one uses an if statement and the conditional (ternary) operator kata link: ...
Code along with me as we solve 'Simple validation of a username with regex', a Level 8 kyu #
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Last Updated: June 3, 2026
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