Does s only have unique letters? function isogram(s) { const chs = new Set(s); return chs.size === s.length; }https://www.reddit.com/r/javascript/comments/7b8jy9/my_code_works_but_its_wrong/ …
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Could be fixed by starting with [...s]. Also? a[c] === c
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JavaScript, HTML, CSS, HTTP, performance, security, Bash, Unicode, i18n, macOS.