The specific answer to this question is found in this one line below:
//pull the last two digits of the year
//logs to console
//creates a new date object (has the current date and time by default)
//gets the full year from the date object (currently 2017)
//converts the variable to a string
//gets the substring backwards by 2 characters (last two characters)
console.log(new Date().getFullYear().toString().substr(-2));
Formatting Full Date Time Example, Single Function (MMddyy):
JavaScript:
//A function for formatting a date to MMddyy
function formatDate(d)
{
//get the month
var month = d.getMonth();
//get the day
//convert day to string
var day = d.getDate().toString().padStart(2, '0');
//get the year
var year = d.getFullYear();
//pull the last two digits of the year
year = year.toString().substr(-2);
//increment month by 1 since it is 0 indexed
//converts month to a string
month = (month + 1).toString().padStart(2, '0');
//return the string "MMddyy"
return month + day + year;
}
var d = new Date();
console.log(formatDate(d));
Formatting Full Date Example, multiple functions (MMddyy):
// function getMonth with 1 parameter expecting date
// This function returns a string of type MM (example: 05 = May)
function getMonth(d) {
//get the month
var month = d.getMonth();
//increment month by 1 since it is 0 indexed
//converts month to a string
//if month is 1-9 pad right with a 0 for two digits
month = (month + 1).toString().padStart(2, '0');
return month;
}
// function getDay with 1 parameter expecting date
// This function returns a string of type dd (example: 09 = The 9th day of the month)
function getDay(d) {
//get the day
//convert day to string
//if day is between 1-9 pad right with a 0 for two digits
var day = d.getDate().toString().padStart(2, '0');;
return day;
}
// function getYear with 1 parameter expecting date
// This function returns the year in format yy (example: 21 = 2021)
function getYear(d) {
//get the year
var year = d.getFullYear();
//pull the last two digits of the year
year = year.toString().substr(-2);
return year;
}
//A function for formatting a date to MMddyy
function formatDate(d)
{
//return the string "MMddyy"
return getMonth(d) + getDay(d) + getYear(d);
}
var d = new Date();
console.log(formatDate(d));
Answers for full browser support (Internet Explorer)
Formatting Full Date Time Example, Single Function (MMddyy): jsFiddle
JavaScript:
//A function for formatting a date to MMddyy
function formatDate(d)
{
//get the month
var month = d.getMonth();
//get the day
//convert day to string
var day = d.getDate().toString();
//get the year
var year = d.getFullYear();
//pull the last two digits of the year
year = year.toString().substr(-2);
//increment month by 1 since it is 0 indexed
//converts month to a string
month = (month + 1).toString();
//if month is 1-9 pad right with a 0 for two digits
if (month.length === 1)
{
month = "0" + month;
}
//if day is between 1-9 pad right with a 0 for two digits
if (day.length === 1)
{
day = "0" + day;
}
//return the string "MMddyy"
return month + day + year;
}
var d = new Date();
console.log(formatDate(d));
Formatting Full Date Example, multiple functions (MMddyy):
// function getMonth with 1 parameter expecting date
// This function returns a string of type MM (example: 05 = May)
function getMonth(d) {
//get the month
var month = d.getMonth();
//increment month by 1 since it is 0 indexed
//converts month to a string
month = (month + 1).toString();
//if month is 1-9 pad right with a 0 for two digits
if (month.length === 1)
{
month = "0" + month;
}
return month;
}
// function getDay with 1 parameter expecting date
// This function returns a string of type dd (example: 09 = The 9th day of the month)
function getDay(d) {
//get the day
//convert day to string
var day = d.getDate().toString();
//if day is between 1-9 pad right with a 0 for two digits
if (day.length === 1)
{
day = "0" + day;
}
return day;
}
// function getYear with 1 parameter expecting date
// This function returns the year in format yy (example: 21 = 2021)
function getYear(d) {
//get the year
var year = d.getFullYear();
//pull the last two digits of the year
year = year.toString().substr(-2);
return year;
}
//A function for formatting a date to MMddyy
function formatDate(d)
{
//return the string "MMddyy"
return getMonth(d) + getDay(d) + getYear(d);
}
var d = new Date();
console.log(formatDate(d));