TypeScript - max value in array

In this article, we would like to show you how to find maximum value in array in TypeScript.

Quick solution:

const numbers: number[] = [2, 3, 1];
const max: number = Math.max(...numbers);

console.log(max);  // 3

Reusable logic

const findMax = (array: number[]): number => {
    if (array.length === 0) {
        return NaN;
    }
    let result = array[0];
    for (let i = 1; i < array.length; ++i) {
        const entry = array[i];
        if (entry > result) {
            result = entry;
        }
    }
    return result;
};


// Usage example:

const max = findMax([2, 3, 1]);

console.log(max);  // 3

Output:

3