JavaScript - min value in array

In this article, we would like to show you how to find the minimum value in an array working with JavaScript.

1. Using Math.min() method

// ONLINE-RUNNER:browser;

const array = [3, 1, 2];

const result = Math.min(...array);

console.log(result);  // 1

or:

// ONLINE-RUNNER:browser;

const array = [3, 1, 2];

const result = Math.min.apply(null, array);

console.log(result);  // 1

2. Using reduce() method

// ONLINE-RUNNER:browser;

const array = [3, 1, 2];

const result = array.reduce((a, b) => Math.min(a, b));

console.log(result);  // 1

3. By comparing items in array

// ONLINE-RUNNER:browser;

const array = [3, 1, 2];

let result = Infinity;

for(const item of array) {
  if(item < result) {
    result = item;
  }
}

console.log(result); // 1

4. Add function to Array.prototype

In this example, we add a new function min() to the Array() object so we can use it on every array as it was a built-in function.

// ONLINE-RUNNER:browser;

var numbers = [2, 3, 1];

Array.prototype.min = function() {
    return Math.min.apply(null, this);
};

console.log(numbers.min()); // 1

See also

1. JavaScript - find min value in array with Array reduce method

References