Question

How to get the maximum date from an array of dates in JavaScript

Answer 1

function maxDate(dates) {
    let max = dates[0],
    obj = new Date(dates[0]);

    dates.forEach(function(dt, index) {
      if (new Date( dt ) > obj) {
        max = dt;
        obj = new Date(dt);
      }
    });
 return max;
}

let dates = ['2020/03/20', '2020/05/21', '2020/01/13', '2020/01/14', '2020/05/20']; 
          
console.log(maxDate(dates));
 
 
/*
run:
 
2020/05/21

*/

 

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Answer 2

let dates = ['2020/03/20', '2020/05/21', '2020/01/13', '2020/01/14', '2020/05/20']; 

let max = Date(Math.max.apply(null, dates));

console.log(max);
 
 
/*
run:
 
Thu May 21 2020 10:09:20 GMT+0300 (Israel Daylight Time)

*/

 

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Answer 3

let dates = ['2020/03/20', '2020/05/21', '2020/01/13', '2020/01/14', '2020/05/20']; 
 
let max = dates.reduce(function(a, b) { return a > b ? a : b; });
 
console.log(max);
  
  
/*
run:
  
2020/05/21
 
*/

 

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