# Function parameters in JavaScript

Functions can take data as parameters. For example, let's make a function that will take a number as a parameter:

`function func(num) { }`

Let's make the function square the passed number:

`function func(num) { console.log(num ** 2); }`

Let's test the function by calling it with different numbers:

`func(2); // shows 4 func(3); // shows 9`

Make a function that takes a number as a parameter and prints the cube of this number to the console.

Make a function that takes a number as a parameter and checks if the number is positive or negative. In the first case, let the function output the text `'+++'` to the console, and in the second case, `'---'`.

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