function calcDays (){ var age = document.getElementById('number').value; var out = document.getElementById('output'); var exactDay = document.getElementById('day'); age = new Date(age); var today = new Date(); exactDay = age.getFullYear(); var oneDay = 24*60*60*1000; var days = Math.round(Math.abs((age.getTime() - today.getTime())/(oneDay))); var years = Math.floor(days / 365.25); if (age > today) { out.innerHTML = "Hello Time Traveller
We hope you come in peace

"; } else if (exactDay <= 2018 && exactDay > 2016) { out.innerHTML = "You're an infant
Birth Year: " + exactDay + "
Age: " + years + " years old.
You have lived for exactly " + days + " days

"; } if (years === 1) { out.innerHTML = "You're an infant
Birth Year: " + exactDay + "
Age: " + years + " year old.
You have lived for exactly " + days + " days

"; } else if (exactDay <= 2016 && exactDay > 2014) { out.innerHTML = "You're a Toddler
Birth Year: " + exactDay + "
Age: " + years + " years old.
You have lived for exactly " + days + " days

"; } else if (exactDay <= 2014 && exactDay > 2009) { out.innerHTML = "You're a Child
Birth Year: " + exactDay + "
Age: " + years + " years old.
You have lived for exactly " + days + " days

"; } else if (exactDay <= 2009 && exactDay > 2004) { out.innerHTML = "You're in Early Adolescence
Birth Year: " + exactDay + "
Age: " + years + " years old.
You have lived for exactly " + days + " days

"; } else if (exactDay <= 2004 && exactDay > 1999) { out.innerHTML = "You're in Older Adolescence
Birth Year: " + exactDay + "
Age: " + years + " years old.
You have lived for exactly " + days + " days

"; } else if (exactDay <= 1999 && exactDay > 1987) { out.innerHTML = "You're an Adult
Birth Year: " + exactDay + "
Age: " + years + " years old.
You have lived for exactly " + days + " days

"; } if (years === 18 || years === 21) { out.innerHTML = "Congratulations, You're legal
Birth Year: " + exactDay + "
Age: " + years + " years old.
You have lived for exactly " + days + " days

"; } else if (exactDay <= 1987 && exactDay > 1967) { out.innerHTML = "You're Middle Aged
Birth Year: " + exactDay + "
Age: " + years + " years old.
You have lived for exactly " + days + " days

"; } if (years === 40) { out.innerHTML = "Congratulations, life begins at 40
Birth Year: " + exactDay + "
Age: " + years + " years old.
You have lived for exactly " + days + " days

"; } else if (exactDay <= 1967 && exactDay > 1896) { out.innerHTML = "You're Old Aged
Birth Year: " + exactDay + "
Age: " + years + " years old.
You have lived for exactly " + days + " days

"; } else if (exactDay <= 1896) { out.innerHTML = "You're Immortal
Birth Year: " + exactDay + "
Age: " + years + " years old.
You have lived for exactly " + days + " days

"; } }

How Many Days Have You Lived?