o1值2009/10/16
o2值4
如何让o3的值输出为2009/10/20?function addNumber(o1,o2,o3) {
var v1 = new Date(o1.value);
var v2 = parseInt(o2.value);
v1.setDate(v1.getDate()+v2);
o3.value = v1.toLocaleDateString()
}谢谢!
o2值4
如何让o3的值输出为2009/10/20?function addNumber(o1,o2,o3) {
var v1 = new Date(o1.value);
var v2 = parseInt(o2.value);
v1.setDate(v1.getDate()+v2);
o3.value = v1.toLocaleDateString()
}谢谢!
if(!Date.format){//日期格式化
Date.prototype.format = function(format)
{
var o =
{
"M+" : this.getMonth()+1, //month
"d+" : this.getDate(), //day
"h+" : this.getHours(), //hour
"m+" : this.getMinutes(), //minute
"s+" : this.getSeconds(), //second
"q+" : Math.floor((this.getMonth()+3)/3), //quarter
"S" : this.getMilliseconds() //millisecond
}
if(/(y+)/.test(format))
format=format.replace(RegExp.$1,(this.getFullYear()+"").substr(4 - RegExp.$1.length));
for(var k in o)
if(new RegExp("("+ k +")").test(format))
format = format.replace(RegExp.$1,RegExp.$1.length==1 ? o[k] : ("00"+ o[k]).substr((""+ o[k]).length));
return format;
};
}然后
o3.value=v1.format("yyyy/MM/dd");
var v1 = new Date(o1.value);
var v2 = parseInt(o2.value);
v1.setTime(v1.getTime()+v2*24*60*60*1000);
o3.value = v1.getFullYear()+"/"+(v1.getMonth()+1<10?"0":"")+(v1.getMonth()+1)+"/"+(v1.getDate()<10?"0":"")+v1.getDate();
}
<script>
function addNumber(o1,o2,o3) {
var v1 = new Date(o1);
v1=parseInt(v1.valueOf())+parseInt(o2)*24*3600*1000;
o3=new Date(v1)
o3=o3.toLocaleDateString();
return o3
}
var ret;
ret=addNumber("2009/10/16","4");
alert(ret);
</script>
var m = this.getTime() + day * 24 * 60 * 60 * 1000
return new Date(m);}Date.prototype.format= function (){var rtn = this.getFullYear()+"/"+(this.getMonth()+1<10?"0":"")+(this.getMonth()+1)+"/"+(this.getDate()<10?"0":"")+this.getDate();return rtn;}具体可以参考http://www.cnblogs.com/yukaizhao/archive/2007/04/24/javascript_date_extend.html