isFinite

In this example:

• We check if an input variable is a finite number.
• If true, we display a Success message.
• Otherwise, we display the following message: Invalid. Please enter a valid number.
• For details on how to display messages, see setMessage.

if(isFinite(input)) {
	setMessage('Success');
} else {
	setMessage('Invalid. Please enter a valid number.');
};