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