Übung 14: Also, was sind das denn nur für Ausdrücke?

Ausdruck	Rückgabewert	Datentyp
'1.5' * 2	3	number
'1,5' * 2	NaN	number
'1.5' + 2	'1.52'	string
Number('1.5') * 2	3	number
Number('1,5') * 2	NaN	number
Number('3 Tage') * 7	NaN	number
Number('Seite 20') + 5	NaN	number
'9,2' + Number('11.7')	'9,211.7'	string
(NaN - 2) * (4 / 2)	NaN	number
alert(Number(17 / 2 + 1.3))	undefined	'undefined'
console.log(Number(17 / 2 + 1.3))	undefined	'undefined'
typeof 12.25	'number'	string
typeof typeof 12.25	'string'	string