How to select Min/Max dates in an array using JavaScript ?

Namachila 1 day ago

0 0 1 minute read

Given an array of JavaScript date. The task is to get the minimum and maximum date of the array using JavaScript.

Below are the following approaches:

Use Math.max.apply() and Math.min.apply() Methods
Use reduce() Method

Approach 1: Use Math.max.apply() and Math.min.apply() Methods

Get the JavaScript dates in an array.
Use Math.max.apply() and Math.min.apply() function to get the maximum and minimum dates respectively.

Example: In this example, the maximum and minimum date is determined by the above approach.

Javascript

let dates = [];
 
dates.push(new Date("2019/06/25"));
dates.push(new Date("2019/06/26"));
dates.push(new Date("2019/06/27"));
dates.push(new Date("2019/06/28"));
 
function GFG_Fun() {
    let maximumDate = new Date(Math.max.apply(null, dates));
    let minimumDate = new Date(Math.min.apply(null, dates));
 
    console.log("Max date is - " + maximumDate);
    console.log("Min date is - " + minimumDate);
}
GFG_Fun();

Output

Max date is - Fri Jun 28 2019 00:00:00 GMT+0000 (Coordinated Universal Time)
Min date is - Tue Jun 25 2019 00:00:00 GMT+0000 (Coordinated Universal Time)

Approach 2: Use reduce() method

Get the JavaScript dates in an array.
Use reduce() method in an array of dates and define the respective function for the maximum and minimum dates.

Example: In this example, the maximum and minimum date is determined by the above approach.

Javascript

let dates = [];
 
dates.push(new Date("2019/06/25"));
dates.push(new Date("2019/06/26"));
dates.push(new Date("2019/06/27"));
dates.push(new Date("2019/06/28"));
 
function GFG_Fun() {
    let mnDate = dates.reduce(function (a, b) {
        return a < b ? a : b;
    });
 
    let mxDate = dates.reduce(function (a, b) {
        return a > b ? a : b;
    });
 
    console.log("Max date is - " + mxDate);
    console.log("Min date is - " + mnDate);
}
GFG_Fun();

Output

Max date is - Fri Jun 28 2019 00:00:00 GMT+0000 (Coordinated Universal Time)
Min date is - Tue Jun 25 2019 00:00:00 GMT+0000 (Coordinated Universal Time)