Author: Learners Store

By using toLocaleTimeString() :

let time = "11:40:22 PM";
let date = new Date(`01/01/2022 ${time}`); 
let formattedTime = date.toLocaleTimeString('en-GB')
console.log(formattedTime)

// 23:40:22 

Explanation : 

1. time = "11:40:22 PM"
2. date = 2022-01-01T23:40:22.000Z (we can give any date as we are converting only time)
3. formattedTime = 23:40:22 ("en-GB" means 24-hour time without AM/PM)

By using slice() method :

let s = "12:40:22AM";
 
let indexPosition = s.length - 2;

let result = s.slice(0, indexPosition) + " " + s.slice(indexPosition);

console.log(result);

// 12:40:22 AM (space is added before AM)

Explanation :

1. s = "12:40:22AM"
2. indexPosition = 10 - 2 = 8
3. result = 12:40:22 + " " + AM = 12:40:22 AM

By using filter method

let sampleArray = [5, 5, 2, 4, 5];
let largestNumber = Math.max(...sampleArray);

let count = sampleArray.filter(number => number === largestNumber).length;
console.log("Count of Largest numbers in the Array : ", count);

// Count of Largest numbers in the Array : 3

By using reduce method

let sampleArray = [5, 5, 2, 4, 5];
let largestNumber = Math.max(...sampleArray);

let result = sampleArray.reduce((count, currentValue) => {
       return count + (currentValue === largestNumber)
},0);

console.log("Count of Largest numbers in the Array : ", result);

// Count of Largest numbers in the Array : 3