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<title>js获取日期：前天、昨天、今天、明天、后天 - www.vnote.net</title>
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<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.getFullYear();
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>
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文章来源：微笔记_博客