The Math.max()
function returns the largest of the zero or more numbers given as input parameters, or NaN
if any parameter isn't a number and can't be converted into one.
The Math.max()
function returns the largest of the zero or more numbers given as input parameters, or NaN
if any parameter isn't a number and can't be converted into one.
Math.max() Math.max(value0) Math.max(value0, value1) Math.max(value0, value1, /* … ,*/ valueN)
value1
, value2
, … , valueN
Zero or more numbers among which the largest value will be selected and returned.
Math.max(10, 20); // 20 Math.max(-10, -20); // -10 Math.max(-10, 20); // 20
Array.prototype.reduce()
can be used to find the maximum element in a numeric array, by comparing each value:
const arr = [1,2,3]; const max = arr.reduce((a, b) => Math.max(a, b), -Infinity);
The following function uses Function.prototype.apply()
to get the maximum of an array. getMaxOfArray([1, 2, 3])
is equivalent to Math.max(1, 2, 3)
, but you can use getMaxOfArray()
on programmatically constructed arrays. This should only be used for arrays with relatively few elements.
function getMaxOfArray(numArray) { return Math.max.apply(null, numArray); }
The spread syntax is a shorter way of writing the apply
solution to get the maximum of an array:
const arr = [1, 2, 3]; const max = Math.max(...arr);
However, both spread (...
) and apply
will either fail or return the wrong result if the array has too many elements, because they try to pass the array elements as function parameters. See Using apply and built-in functions for more details. The reduce
solution does not have this problem.
Specification |
---|
ECMAScript Language Specification # sec-math.max |
Desktop | Mobile | Server | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | Deno | Node.js | |
max |
1 |
12 |
1 |
3 |
3 |
1 |
4.4 |
18 |
4 |
10.1 |
1 |
1.0 |
1.0 |
0.10.0 |
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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/max