JavaScript获取当前日期，昨天，今天日期以及任意天数间隔日期

<script language="JavaScript" type="text/javascript"> 
function GetDateStr(AddDayCount) 
{ var dd = new Date(); dd.setDate(dd.getDate()+AddDayCount);//获取AddDayCount天后的日期 var y = dd.getYear(); var m = dd.getMonth()+1;//获取当前月份的日期 var d = dd.getDate(); return y+"/"+m+"/"+d; 
} document.write("前天："+GetDateStr(-2)); document.write("<br />昨天："+GetDateStr(-1)); document.write("<br />今天："+GetDateStr(0)); document.write("<br />明天："+GetDateStr(1)); document.write("<br />后天："+GetDateStr(2)); document.write("<br />大后天："+GetDateStr(3)); document.getElementById("id1").innerHTML=""+y+"/"+(m+1)+"/"+d;</script>