Getting the largest number from an array

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Math.max() returns the largest of zero or more numbers passed to it. We can use the spread operator when passing an array to get the largest number from that array.

// get the largest number from a list of numbers
Math.max(69, 420, 108, 47)  // ⇒ 420
 
// passing an array instead of individual numbers returns `NaN`
const numbers = [69, 420, 108, 47]
Math.max(numbers)           // ⇒ NaN
 
// we get the expected result by spreading the array
const numbers = [69, 420, 108, 47]
Math.max(...numbers)        // ⇒ 420
// get the largest number from a list of numbers
Math.max(69, 420, 108, 47)  // ⇒ 420
 
// passing an array instead of individual numbers returns `NaN`
const numbers = [69, 420, 108, 47]
Math.max(numbers)           // ⇒ NaN
 
// we get the expected result by spreading the array
const numbers = [69, 420, 108, 47]
Math.max(...numbers)        // ⇒ 420

The same works for Math.min().

// get the smallest number from a list of numbers
Math.min(69, 420, 108, 47)  // ⇒ 47
 
// passing an array instead of individual numbers returns `NaN`
const numbers = [69, 420, 108, 47]
Math.min(numbers)           // ⇒ NaN
 
// we get the expected result by spreading the array
const numbers = [69, 420, 108, 47]
Math.min(...numbers)        // ⇒ 47
// get the smallest number from a list of numbers
Math.min(69, 420, 108, 47)  // ⇒ 47
 
// passing an array instead of individual numbers returns `NaN`
const numbers = [69, 420, 108, 47]
Math.min(numbers)           // ⇒ NaN
 
// we get the expected result by spreading the array
const numbers = [69, 420, 108, 47]
Math.min(...numbers)        // ⇒ 47
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