In this Article we will go through how to add an ordinal suffix to a number only using single line of code in JavaScript.
This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.
Let's define this short function:
const addOrdinal = n => `${n}${['st', 'nd', 'rd'][((n + 90) % 100 - 10) % 10 - 1] || 'th'}`;
Parameters n is a position number.
const addOrdinal = n => `${n}${[, 'st', 'nd', 'rd'][/1?.$/.exec(n)] || 'th'}`;
const addOrdinal = n => `${n}${[, 'st', 'nd', 'rd'][n % 100 >> 3^1 && n % 10] || 'th'}`;
const addOrdinal = n => `${n}${{one: 'st', two: 'nd', few: 'rd', other: 'th'}[new Intl.PluralRules('en', { type: 'ordinal' }).select(n)]}`;
addOrdinal(1); // '1st'
addOrdinal(2); // '2nd'
addOrdinal(3); // '3rd'
addOrdinal(11); // '11th'
addOrdinal(12); // '13th'
addOrdinal(13); // '13th'