本文實例為大家分享了日期計算器的具體實現代碼，供大家參考，具體內容如下
日期計算器html代碼片段：
<!doctype html><html lang="en"><head> <meta charset="UTF-8"> <title>日期計算器</title> <script type="text/javascript" src="date_calc.js"></script></head><body><br><br><b>推算幾天后的日期：</b><br> 和<input size="8" id="SY" value="2016">年<input size="4" id="SM" value="11">月<input size="4" id="SD" value="16">日（缺省為今天）<br>相差<input size="8" id="decday" value="100">天（輸入負數則往前計算）<br>是：<span id="result1"></span><br><input type=button value="計算" onclick="cala()"><br><b>計算日期差：</b><br> <input size="8" id="SY2" value="2016">年<input size="4" id="SM2" value="11">月<input size="4" id="SD2" value="16">日<br>和 <input size="8" id="SY3" value="2017" >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="計算" onclick="calb()"><br></body></html>
date_calc.js代碼片段：
var hzWeek= new Array("日","一","二","三","四","五","六","日");//獲取星期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;}以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持武林網。
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