javascript中获取昨天、明天时间等

<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)); </script>