Date.prototype.MaxDayOfDate = function()
{
var myDate = this;
var ary = myDate.toArray();
var date1 = (new Date(ary[0],ary[1]+1,1));
var date2 = date1.dateAdd(1,’m’,1);
var result = dateDiff(date1.Format(‘yyyy-MM-dd’),date2.Format(‘yyyy-MM-dd’));
return result;
}
//+—————————————————
//| 取得当前日期所在周是一年中的第几周
//+—————————————————
Date.prototype.WeekNumOfYear = function()
{
var myDate = this;
var ary = myDate.toArray();
var year = ary[0];
var month = ary[1]+1;
var day = ary[2];
document.write(‘< script language=VBScript> n’);
document.write(‘myDate = DateValue(”+month+’-‘+day+’-‘+year+”) n’);
document.write(‘result = DatePart(‘ww’, myDate) n’);
document.write(‘ n’);
return result;
}
//+—————————————————
//| 字符串转成日期类型
//| 格式 MM/dd/YYYY MM-dd-YYYY YYYY/MM/dd YYYY-MM-dd
//+—————————————————
function StringToDate(DateStr)
{
var converted = Date.parse(DateStr);
var myDate = new Date(converted);
if (isNaN(myDate))
{
//var delimCahar = DateStr.indexOf(‘/’)!=-1?’/’:’-‘;
var arys= DateStr.split(‘-‘);
myDate = new Date(arys[0],–arys[1],arys[2]);
}
return myDate;
}
