get previous years in array using momentjs

Question

How can I generate a list of array till today? I can't hardcode [2016,2017,2018], because I have to do it every year.

function (numberOfYearsBack) { // }

Monasticism

You don't really need moment.js for this – Disposal

Answer 1

Get the current year using getFullYear(), and use Array.from() with a map function to declare and initialize an array with the values you need:

const years = (back) => {
  const year = new Date().getFullYear();
  return Array.from({length: back}, (v, i) => year - back + i + 1);
}

console.log(years(3));

Epact

Another option for the return value: return Array.from({ length: back }, (v, i) => year - back + i + 1); – Disposal

@RobertMennell I like that. Never thought of that approach. – Epact

Array.from() has a nice footprint that makes this sort of thing REALLY smooth – Disposal

@RobertMennell Yeah, I agree. Updated my answer. Thanks for the suggestion. – Epact

Answer 2

function years(count, startYear){
   const yearList = [];
   const year = startYear || new Date().getFullYear();   
   for(let i = 0; i < count; i+=1 ){
       yearList.push(Number(year)-i)
   }
   return yearList.sort((a,b)=>a-b)
}
console.log(years(10, 2022))

Chunchung