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/ 11 Years ago, thu, january 23, 2014, 12:00:00
After revisiting this script, and some modifications, the following is available to allow a user to add a feature that calculates the expected delivery date.
// array of ISO YYYY-MM-DD format dates
publicHolidays = {
uk:[2020-01-01,2020-04-10,2020-04-13,2020-05-08,2020-05-25,
2020-08-03,2020-08-31,2020-12-25,2020-12-28],
usa:[2020-01-01,2020-01-20,2020-02-14,2020-02-17,2020-04-10,
2020-04-12,2020-05-10,2020-05-25,2020-06-21,2020-07-03,
2020-07-04,2020-09-07,2020-10-12,2020-10-31,2020,11,11,
2020-11-26,2020-12-25]
}
// check if there is a match in the array
Date.prototype.isPublicHoliday = function( data ){// we check for a public holiday
if(!data) return 1;
return data.indexOf(this.toISOString().slice(0,10))>-1? 0:1;
}
// calculation of business days
Date.prototype.businessDays = function( d, holidays ){
var holidays = holidays || false, t = new Date( this ); // copy date.
while( d ){ // we loop while d is not zero...
t.setDate( t.getDate() + 1 ); // set a date and test it
switch( t.getDay() ){ // switch is used to allow easier addition of other days of the week
case 0: case 6: break;// sunday & saturday
default: // check if we are a public holiday or not
d -= t.isPublicHoliday( holidays );
}
}
return t.toISOString().slice(0,10); // just the YYY-MM-DD
}
// dummy var, could be a form field input
OrderDate = 2020-02-12;
// test with a UK holiday date
var deliveryDate = new Date(OrderDate).businessDays(7, publicHolidays.usa);
// expected output 2020-02-25
console.log(Order date: %s, Delivery date: %s,OrderDate,deliveryDate );
Order date: 2020-02-12, Delivery date: 2020-02-25
The prototype is written to allow inputs from forms (HTML5 forms) of date type inputs as they are already in an ISO YYYY-MM-DD format and the output is formatted as such should that be needing to update a particular field.
The typical use would be...
var delDate = new Date( ISOdate ).businessDays( addBusinessDays, holidayData );
where the delDate is an ISO format date, eg, 2020-01-01
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