Most answers and explanations are not to explain what is a valid string of endDate
or startDate
.
Danny gave us two useful example.
$('#datepicker').datepicker({
startDate: '-2m',
endDate: '+2d'
});
But why?let's take a look at the source code at bootstrap-datetimepicker.js
.
There are some code begin line 1343 tell us how does it work.
if (/^[-+]\d+[dmwy]([\s,]+[-+]\d+[dmwy])*$/.test(date)) {
var part_re = /([-+]\d+)([dmwy])/,
parts = date.match(/([-+]\d+)([dmwy])/g),
part, dir;
date = new Date();
for (var i = 0; i < parts.length; i++) {
part = part_re.exec(parts[i]);
dir = parseInt(part[1]);
switch (part[2]) {
case 'd':
date.setUTCDate(date.getUTCDate() + dir);
break;
case 'm':
date = Datetimepicker.prototype.moveMonth.call(Datetimepicker.prototype, date, dir);
break;
case 'w':
date.setUTCDate(date.getUTCDate() + dir * 7);
break;
case 'y':
date = Datetimepicker.prototype.moveYear.call(Datetimepicker.prototype, date, dir);
break;
}
}
return UTCDate(date.getUTCFullYear(), date.getUTCMonth(), date.getUTCDate(), date.getUTCHours(), date.getUTCMinutes(), date.getUTCSeconds(), 0);
}
There are four kinds of expressions.
w
means week
m
means month
y
means year
d
means day
Look at the regular expression ^[-+]\d+[dmwy]([\s,]+[-+]\d+[dmwy])*$
.
You can do more than these -0d
or +1m
.
Try harder like startDate:'+1y,-2m,+0d,-1w'
.And the separator ,
could be one of [\f\n\r\t\v,]