✍ 📁 🙈 🙉 🙊 : age calculator 計算年齡

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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