12 lines
390 B
JavaScript
12 lines
390 B
JavaScript
const toOrdinalSuffix = num => {
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const int = parseInt(num),
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digits = [int % 10, int % 100],
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ordinals = ['st', 'nd', 'rd', 'th'],
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oPattern = [1, 2, 3, 4],
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tPattern = [11, 12, 13, 14, 15, 16, 17, 18, 19];
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return oPattern.includes(digits[0]) && !tPattern.includes(digits[1])
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? int + ordinals[digits[0] - 1]
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: int + ordinals[3];
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};
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module.exports = toOrdinalSuffix;
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