JavaScript: Find the highest value in an array

JavaScript Math: Exercise-6 with Solution

Find Maximum in Array

Write a JavaScript function to find the highest value in an array.

Test Data :
console.log(max([12,34,56,1]));
console.log(max([-12,-34,0,-56,-1]));
56
0

Visual Presentation:

Sample Solution:

JavaScript Code:

// Define a function named max that takes an input array.
function max(input) {
    // Check if the input is an array, if not, return false.
    if (toString.call(input) !== "[object Array]")
        return false;
    // Return the maximum value from the input array using Math.max.apply.
    return Math.max.apply(null, input);
}

// Output the maximum value from the array [12, 34, 56, 1] to the console.
console.log(max([12, 34, 56, 1]));
// Output the maximum value from the array [-12, -34, 0, -56, -1] to the console.
console.log(max([-12, -34, 0, -56, -1]));

Output:

56
0

Flowchart:

Live Demo:

See the Pen javascript-math-exercise-6 by w3resource (@w3resource) on CodePen.

For more Practice: Solve these Related Problems:

• Write a JavaScript function that finds the maximum number in an array using recursion instead of Math.max.
• Write a JavaScript function that iterates through an array with a for loop to determine the maximum value.
• Write a JavaScript function that returns the maximum number while ignoring non-numeric values in the array.
• Write a JavaScript function that uses the reduce() method to compute the maximum value in an array.

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