Question

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

Answer 1

function minDate(dates) {
    let min = dates[0],
    obj = new Date(dates[0]);

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

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

*/

 

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Answer 2

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

 

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