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js 计算时间差

一ke大白菜 2023-03-05 阅读 100


var hzWeek= new Array("日","一","二","三","四","五","六","日");function cweekday(wday){return hzWeek[wday];}

function cala()
{
y=document.getElementById("SY").value;
m=document.getElementById("SM").value;
d=document.getElementById("SD").value;
ddd=document.getElementById("decday").value;

ttt=new Date(y,m-1,d).getTime()+ddd*24000*3600;

theday=new Date();
theday.setTime(ttt);

document.getElementById("result1").innerHTML=theday.getFullYear()+"年"+(1+theday.getMonth())+"月"+theday.getDate()+"日"+"星期"+cweekday(theday.getDay());


}


function calb()
{

y2=document.getElementById("SY2").value;
m2=document.getElementById("SM2").value;
d2=document.getElementById("SD2").value;


y3=document.getElementById("SY3").value;
m3=document.getElementById("SM3").value;
d3=document.getElementById("SD3").value;


day2=new Date(y2,m2-1,d2);
day3=new Date(y3,m3-1,d3);

document.getElementById("result2").innerHTML=(day3-day2)/86400000;


}


<br><br>
<b>推算几天后的日期:</b>
<br>
 和
<input size=8 id=SY value=2018>年
<input size=4 id=SM value=6>月
<input size=4 id=SD value=13>日
(缺省为今天)
<br>相差
<input size=8 id=decday value=100>天
(输入负数则往前计算)
<br>是:
<span id=result1></span>
<br>
<input type=button value="计算" οnclick="cala()">

<br><br>



<b>计算日期差:</b>
<br>

  <input size=8 id=SY2 value=2018>年
<input size=4 id=SM2 value=6>月
<input size=4 id=SD2 value=13>日

<br>
和 <input size=8 id=SY3 value=2019 >年
<input size=4 id=SM3 value=1>月
<input size=4 id=SD3 value=1>日
<br>相差:
<span id=result2></span>天
<br>
<input type=button value="计算" οnclick="calb()">


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