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52 export function ageAsOf(birthDate, date) { 53 if (!birthDate || !date || !birthDate.isValid() || !date.isValid()) { 54 return null; 55 } 56 57 const onOrAfterBirthday = ( 58 date.month() > birthDate.month() || ( 59 date.month() === birthDate.month() 60 && date.date() >= birthDate.date() 61 ) 62 ); 63 64 return (date.year() - birthDate.year() - (onOrAfterBirthday ? 0 : 1)); 65 }
1 function age(birthday) { 2 var ageDifMs = Date.now() - birthday.getTime(); 3 var ageDate = new Date(ageDifMs); 4 return Math.abs(ageDate.getUTCFullYear() - 1970); 5 }
5 public getAge(): number { 6 return moment().diff(moment(this.value), "years"); 7 }