<html>
<script type="text/javascript">
function getNextDay(d){
??????? d = new Date(d);
??????? d = +d + 1000*60*60*24*2;
??????? d = new Date(d);
??????? //return d;
??????? //格式化
??????? var day=0;
??????? var month=0;
??????? if((d.getMonth()+1)<10){
??????? month="0"+(d.getMonth()+1);
??????? }else{
??????? month=d.getMonth()+1;
??????? }
??????? if(d.getDate()<10){
??????? day="0"+(d.getDate());
??????? }else{
??????? day=d.getDate();
??????? }
??????? alert(d.getFullYear()+"-"+month+"-"+day);
??????? return d.getFullYear()+"-"+month+"-"+day;
????????
??? }
</script>
<body>
<input type="button" onclick="getNextDay(‘2014-10-31‘)"/>
</body>
</html>
原文：http://201108161636.iteye.com/blog/2251389