Languages
[Edit]
EN

JavaScript - Math.max() method example

11 points
Created by:
Zoya-Gaines
413

The Math.max() function returns the highest number from given numbers.

// ONLINE-RUNNER:browser;

var max = Math.max(2, 5);
console.log( max ); // 5

console.log( Math.max(1) ); // 1
console.log( Math.max(1, 2) ); // 2
console.log( Math.max(1, 2, 3) ); // 3
console.log( Math.max(3, 25, -6, 0) ); // 25

console.log( Math.max(-5, -2, -7) ); // -2
console.log( Math.max(2, 1, NaN) ); // NaN
console.log( Math.max() ); // -Infinity

Math.max() function usage with an array in ES5 and ES6 example:

// ONLINE-RUNNER:browser;

var array = [10, 5, 0];

// In ES5
console.log( Math.max.apply(Math, array) ); // 10

// In ES6 - Spread Operator (...) has been introduced 
console.log( Math.max(...array) ); // 10
console.log( Math.max(100, ...array, 120, ...[151, 152]) ); // 152

1. Documentation

SyntaxMath.max(number1, number2, ...numbers)
Parametersnumber1, number2, ...numbers - integer or float number values (primitive values).
Result

Maximal number value (primitive value).

It returns -Infinity if no arguments are passed.

It returns NaN if at least one of the provided values is not a number.

Descriptionmax is a static method that takes number arguments and returns the biggest value.

2. Getting max value from array examples

2.1. With Array reduce method example

This approach uses reduce method to find the maximum value inside the array. By making small modifications of Math.max(a, b) instruction we are able to find maximal value inside properties of a and b variables.

// ONLINE-RUNNER:browser;

var array = [1, 2, 3];

var result = array.reduce(function(a, b) {
    return Math.max(a, b);
});

console.log(result); // 3

2.2. Recurrent max method example

This approach uses recurrence to find the maximum value inside an array of nested arrays.

// ONLINE-RUNNER:browser;

function findMax() {
  function checkEntry(entry) {
    if (entry instanceof Array) {
        return findMax.apply(null, entry);
      }
      
      return entry;
  }

  if (arguments.length > 0) {
    var result = checkEntry(arguments[0]);

    for (var i = 1; i < arguments.length; ++i) {
      var value = checkEntry(arguments[i]);

      if (value > result) {
        result = value;
      }
    }

    return result;
  }

  return NaN;
}

console.log(findMax(1, 2, 3, [4, 5, 6],[7, 8, [9, 10]])); // 10

References

  1. Maxima and minima - Wikipedia

Alternative titles

  1. JavaScript - Math.max() documentation with examples
  2. js - Math.max() method documentation with examples
Donate to Dirask
Our content is created by volunteers - like Wikipedia. If you think, the things we do are good, donate us. Thanks!
Join to our subscribers to be up to date with content, news and offers.

Cross technology - Math.max()

Native Advertising
🚀
Get your tech brand or product in front of software developers.
For more information Contact us
Dirask - we help you to
solve coding problems.
Ask question.

â€ïžđŸ’» 🙂

Join