计算时间差的JAVASCRIPT函数

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<script language="JavaScript">
  //计算天数差的函数,通用   
  function DateDiff(starttime,endtime,diff){  //sDate1和sDate2是2002-12-18格式  
    var sDate1=starttime.value;
 var sDate2=endtime.value;
    var aDate, oDate1, oDate2, iDays  
    aDate = sDate1.split("-")  
    oDate1 = new Date(aDate[1] + '-' + aDate[2] + '-' + aDate[0])  //转换为12-18-2002格式  
    aDate = sDate2.split("-")  
    oDate2 = new Date(aDate[1] + '-' + aDate[2] + '-' + aDate[0])  
   // alert(oDate1 - oDate2)  
    iDays = parseInt(Math.abs(oDate1 - oDate2) / 1000 / 60 / 60 /24)  //把相差的毫秒数转换为天数  
    diff.value=iDays; 
  }

//得当前时间的方法
function getDates(falgs)
{
 var today = new Date();
 var todayStr = today.getYear() + "-";
 if(today.getMonth()<10){
  todayStr = todayStr +"0" +(today.getMonth()+1)+"-";
 }
 else{
  todayStr = todayStr+(today.getMonth()+1)+"-";
 }

 if(today.getDate()<10){
  //alert("11"+today.getDate());
  todayStr = todayStr + "0" +today.getDate();
 }
 else{
  todayStr = todayStr + today.getDate();
 }
 todayStr = todayStr  + "";
 return todayStr;
}
</script>
<html>
<body>
<form name="form1">
开始时间<input type="text" name="createtime">
结束时间<input type="text" name="endtime">
时间差<input type="text" name="diff">
<input type="button" value="确定" onclick="DateDiff(document.all.createtime,document.all.endtime,document.all.diff)">
</form>
</body>
</html>
 

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