# Find the highest number with JavaScript's Math.max

When you need to find the highest value of several numbers, you can use JavaScript’s `Math.max` method. The method accepts as many number arguments as you need to pass into it:

``````Math.max(20, 3, 10, 29);

// returns 29
``````

Passing zero arguments will cause the method to return `-Infinity` as value:

``````Math.max();

// returns -Infinity
``````

Passing any other data type as arguments will cause the method to return `NaN`:

``````Math.max("Hello", 1, 2);

// returns NaN
``````

You can also mix the arguments for the method with negative numbers:

``````Math.max(7, -9, -25);

// returns 7
``````

## Finding the maximum value in an array

When you need to find the maximum value in an array of numbers, you can use the `spread` operator (`...`) to pull out the numbers and pass them as arguments into the `Math.max` method:

``````let scores = [7, 4, 6, 8];
let maxNumber = Math.max(...scores);
// maxNumber value is 8
``````

Or you can also use the `reduce` method to compare two elements at a time:

``````let scores = [7, 6, 5];
let max = scores.reduce(function(a, b) {
return Math.max(a, b);
});
``````

The `reduce` method above will perform two times:

1. Compare between `7` and `6`, returns `7`
2. Compare between `7` and `5`, returns `7`

And so the `max` value is `7`

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