yesNo javascript Code Snippet in 2025
stringregexpintermediate
Last Updated: 2 November 2025
Returns true if the string is y/yes or false if the string is n/no.
- Use
RegExp.prototype.test()to check if the string evaluates toy/yesorn/no. - Omit the second argument,
defto set the default answer asno.
const yesNo = (val, def = false) => /^(y|yes)$/i.test(val) ? true : /^(n|no)$/i.test(val) ? false : def;
yesNo('Y'); // true
yesNo('yes'); // true
yesNo('No'); // false
yesNo('Foo', true); // truejavascript snippet similar to yesNo For You in November 2025
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