JavaScript计算两个日期之间相差的天数

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<title>JS计算两个日期之间的天数</title>
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<body>


<script type="text/javascript">
  function  btnCount_Click(){  
       s1  =  "2006-12-18"  
       s2  =  "2007-1-5"  
       alert("第一个日期;"+s1+"/n第二个日期:"+s2+"/n相差"+DateDiff(s1,s2)+"天")  
   }  

   //计算天数差的函数,通用  
   function  DateDiff(sDate1,  sDate2){    //sDate1和sDate2是2006-12-18格式  
       var  aDate,  oDate1,  oDate2,  iDays  
       aDate  =  sDate1.split("-")  
       oDate1  =  new  Date(aDate[1]  +  '-'  +  aDate[2]  +  '-'  +  aDate[0])    //转换为12-18-2006格式  
       aDate  =  sDate2.split("-")  
       oDate2  =  new  Date(aDate[1]  +  '-'  +  aDate[2]  +  '-'  +  aDate[0])  
       iDays  =  parseInt(Math.abs(oDate1  -  oDate2)  /  1000  /  60  /  60  /24)    //把相差的毫秒数转换为天数  
       return  iDays  
   }    

</script>
<input name="" type="button" onclick="btnCount_Click()" value="计算天数" />
</body>
</html>

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转载自blog.csdn.net/giscript/article/details/52384401