JavaScript Math.min() Method

1. Syntax of Math.min()
2. Example 1: Use Math.min() Method in JavaScript
3. Example 2: Use the Array.reduce() With Math.min() Method
4. Example 3: Use the Function.prototype.apply() With Math.min() Method
5. Example 4: Use the Spread Operator With Math.min() Method
6. Example 5: Use Math.min() Method With Exception

The Math.min() method finds out the lowest number from the given numbers. We can pass multiple numbers as the parameter.

But in general, it expects at least two numbers as the parameter so that it can compare them and return the lowest one.

Syntax of Math.min()

Math.min(num1, num2, ....., numN)

Parameters

Return

The Math.min() method returns the lowest value from the given values as the parameter.

If any of the values passed in the parameter is non-numeric that can be converted as NaN, this method will return NaN.

This method will return Infinity if nothing is passed as the parameter.

Example 1: Use Math.min() Method in JavaScript

const result1 = Math.min(3, 11, 31, 50, 15)
const result2 = Math.min(-15, -42, -13, -37, -6)

console.log(result1)
console.log(result2)

Output:

3
-42

First, we take some positive numbers and use this method to find the minimum value. This method returns 3 as the lowest number among the given numbers.

Second, we take some negative numbers to find out the minimum value. It returns -42, which is the lowest number among all given negative numbers.

Example 2: Use the Array.reduce() With Math.min() Method

const arr1 = [10, 50, 1, 33, 20]
const arr2 = []

const result1 = arr1.reduce((x, y) => Math.min(x, y), Infinity)
const result2 = arr2.reduce((x, y) => Math.min(x, y), Infinity)

console.log(result1)
console.log(result2)

Output:

1
Infinity

The array.reduce() method iterates the whole array and applies the Math.min() method. It compares the numeric values of the array and returns the lowest one.

It will return Infinity if the array does not contain any value.

Example 3: Use the Function.prototype.apply() With Math.min() Method

const arr = [10, 50, 1, 40, 11]

function getMinNumFromArray(arr){
    return Math.min.apply(null, arr)
}

console.log(getMinNumFromArray(arr))

Output:

1

The Math.min() method does not work with an array. The Function.prototype.apply() is used with Math.min() to get the lowest number from an array.

Example 4: Use the Spread Operator With Math.min() Method

const arr = [1, 50, 31, 17, 26]
const result = Math.min(...arr)

console.log(result)

Output:

1

The spread operator ... converts an array into individual elements. The Math.min() method finds the lowest number among those elements of an array.

Example 5: Use Math.min() Method With Exception

const result1 = Math.min(2, 12, 'z')
const result2 = Math.min()

console.log(result1)
console.log(result2)

Output:

NaN
Infinity

First, we pass some numbers and a string as the parameter of this method. This method returns NaN as it cannot deal with non-numeric numbers that can be converted into NaN.

Second, we pass nothing in the parameter of this method, and it returns Infinity.