age calculator 計算年齡

age calculator 計算年齡

input age : <input type="text" id="iputD" value="YYYY/MM/DD" onmouseover="this.select()" onchange="agge()"> <div id="ageDP"></div> <script language="JavaScript">function agge() { var AgeDays = 0; var AgeWeeks = 0; var AgeMonth = 0; var AgeYears = 0; var AgeRmdr = 0; var DoC = new Date(); var ddd = iputD.value; var DoB = new Date(ddd); if(isNaN(DoB .getTime())){ alert('err input YYYY/MM/DD') iputD.value= "YYYY/MM/DD"; iputD.select(); } else { mSecDiff = DoC - DoB; AgeDays = mSecDiff / 86400000; AgeWeeks = AgeDays / 7; AgeMonth = AgeDays / 30.4375; AgeYears = AgeDays / 365.24; AgeYears = Math.floor(AgeYears); AgeRmdr = (AgeDays - AgeYears * 365.24) / 30.4375; AgeDays = Math.round(AgeDays); AgeWeeks = Math.round(AgeWeeks); AgeMonth = Math.round(AgeMonth); AgeRmdr = Math.round(AgeRmdr ); var DP = " AGE : " + AgeYears + " and "; DP += AgeRmdr + " months <br>" ; DP += " days : " + AgeDays + "<br>" ; DP += " weeks : " + AgeWeeks + "<br>"; DP += "months : " + AgeMonth + "<br>"; ageDP.innerHTML =DP iputD.select(); } } </script>

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