JavaScript Math.hypot()

// the square root of the sum of 3 and 4 
var num = Math.hypot(3, 4);

console.log(num);     // 5

hypot() Syntax

The syntax of the hypot() method is:

Math.hypot(n1, n2, ..., nx)

Here, hypot() is a static method. Hence, we need to access the method using the class name, Math.

hypot() Parameters

The hypot() method takes in arbitrary (one or more) numbers as arguments.

• n1 - a number
• n2 - a number, and so on.

hypot() Return Value

The hypot() method returns:

• the square root of the sum of squares of the given arguments.
• NaN if any argument is non-numeric.
• 0 if no arguments are given.

Example 1: JavaScript Math.hypot()

// the square root of the sum of 0.7 and 2.4 
var num1 = Math.hypot(0.7, 2.4);

console.log(num1);    // 2.5

// the square root of the sum of 7, 24, and 25
var num2 = Math.hypot(7, 24, 25);

console.log(num2);    // 35.35533905932738

In the above example,

• Math.hypot(0.7, 2.4) computes the square root of the sum of squares of 0.7 and 2.4
• Math.hypot(7, 24, 25) computes the square root of the sum of squares of 7, 24, and 25

Example 2: hypot() With a Single Argument

// the  square root of the sum of squares of -3
var num = Math.hypot(-3);

console.log(num);    // 3

In the above example, we have used Math.hypot() to compute the square root of the sum of squares of -3.

The output 3 indicates that for single-value arguments, their absolute values are returned.

Example 3: hypot() With No Arguments

// call hypot() without passing any arguments
var num = Math.hypot();

console.log(num);    // 0

In the above example, we have used Math.hypot() to compute the square root without passing any argument.

The output indicates that 0 is returned if we don't pass any argument.

Recommended Readings:

• JavaScript Math abs()
• JavaScript Math sqrt()
• JavaScript Math pow()