Correction
In the upcoming lesson I provide a way to get and update the date values. This will but only if you don't exceed the actual available limits. Ex. April 28 adding 7 days would be 35 as this is updating the number value and once in a numeric format decoupled from the actual date limit which would be 30 and carrying 3 into the next month.
To have more accurate dates you would need to bring the calculation back into the JavaScript Date Object
Adding 7 days can be done mathematically adding milliseconds
const today = new Date(); const nextWeek = new Date(today.getTime() + 7 * 24 * 60 * 60 * 1000);
let today = new Date()
let birthday = new Date('December 17, 1995 03:24:00')
let birthday = new Date('1995-12-17T03:24:00')
let birthday = new Date(1995, 11, 17) // the month is 0-indexed
let birthday = new Date(1995, 11, 17, 3, 24, 0)
let date = new Date(98, 1) // Sun Feb 01 1998 00:00:00 GMT+0000 (GMT)
date.setFullYear(98) // Sat Feb 01 0098 00:00:00 GMT+0000 (BST)
Date.prototype.getDate()
Returns the day of the month (1–31) for the specified date according to local time.
Date.prototype.getDay()
Returns the day of the week (0–6) for the specified date according to local time.
Date.prototype.getFullYear()
Returns the year (4 digits for 4-digit years) of the specified date according to local time.
Date.prototype.getHours()
Returns the hour (0–23) in the specified date according to local time.
Date.prototype.getMilliseconds()
Returns the milliseconds (0–999) in the specified date according to local time.
Date.prototype.getMinutes()
Returns the minutes (0–59) in the specified date according to local time.
Date.prototype.getMonth()
Returns the month (0–11) in the specified date according to local time.
Date.prototype.getSeconds()
Returns the seconds (0–59) in the specified date according to local time.
Date.prototype.getTime()
Returns the numeric value of the specified date as the number of milliseconds since January 1, 1970, 00:00:00 UTC. (Negative values are returned for prior times.)
Date.prototype.getTimezoneOffset()
Returns the time-zone offset in minutes for the current locale.
Date.prototype.getUTCDate()
Returns the day (date) of the month (1–31) in the specified date according to universal time.
Date.prototype.getUTCDay()
Returns the day of the week (0–6) in the specified date according to universal time.
Date.prototype.getUTCFullYear()
Returns the year (4 digits for 4-digit years) in the specified date according to universal time.
Date.prototype.getUTCHours()
Returns the hours (0–23) in the specified date according to universal time.
Date.prototype.getUTCMilliseconds()
Returns the milliseconds (0–999) in the specified date according to universal time.
Date.prototype.getUTCMinutes()
Returns the minutes (0–59) in the specified date according to universal time.
Date.prototype.getUTCMonth()
Returns the month (0–11) in the specified date according to universal time.
Date.prototype.getUTCSeconds()
Returns the seconds (0–59) in the specified date according to universal time.
Date.prototype.getYear()
Returns the year (usually 2–3 digits) in the specified date according to local time. Use getFullYear() instead.
Date.prototype.setDate()
Sets the day of the month for a specified date according to local time.
Date.prototype.setFullYear()
Sets the full year (e.g. 4 digits for 4-digit years) for a specified date according to local time.
Date.prototype.setHours()
Sets the hours for a specified date according to local time.
Date.prototype.setMilliseconds()
Sets the milliseconds for a specified date according to local time.
Date.prototype.setMinutes()
Sets the minutes for a specified date according to local time.
Date.prototype.setMonth()
Sets the month for a specified date according to local time.
Date.prototype.setSeconds()
Sets the seconds for a specified date according to local time.
Date.prototype.setTime()
Sets the Date object to the time represented by a number of milliseconds since January 1, 1970, 00:00:00 UTC. Use negative numbers for times prior.
Date.prototype.setUTCDate()
Sets the day of the month for a specified date according to universal time.
Date.prototype.setUTCFullYear()
Sets the full year (e.g. 4 digits for 4-digit years) for a specified date according to universal time.
Date.prototype.setUTCHours()
Sets the hour for a specified date according to universal time.
Date.prototype.setUTCMilliseconds()
Sets the milliseconds for a specified date according to universal time.
Date.prototype.setUTCMinutes()
Sets the minutes for a specified date according to universal time.
Date.prototype.setUTCMonth()
Sets the month for a specified date according to universal time.
Date.prototype.setUTCSeconds()
Sets the seconds for a specified date according to universal time.
Date.prototype.setYear()
Sets the year (usually 2–3 digits) for a specified date according to local time. Use setFullYear() instead.
Date.prototype.toDateString()
Returns the "date" portion of the Date as a human-readable string like 'Thu Apr 12 2018'.
Date.prototype.toISOString()
Converts a date to a string following the ISO 8601 Extended Format.
Date.prototype.toJSON()
Returns a string representing the Date using toISOString(). Intended for use by JSON.stringify().
Date.prototype.toGMTString()
Returns a string representing the Date based on the GMT (UTC) time zone. Use toUTCString() instead.
Date.prototype.toLocaleDateString()
Returns a string with a locality sensitive representation of the date portion of this date based on system settings.
Date.prototype.toLocaleFormat()
Converts a date to a string, using a format string.
Date.prototype.toLocaleString()
Returns a string with a locality-sensitive representation of this date. Overrides the Object.prototype.toLocaleString() method.
Date.prototype.toLocaleTimeString()
Returns a string with a locality-sensitive representation of the time portion of this date, based on system settings.
Date.prototype.toSource()
Returns a string representing the source for an equivalent Date object. You can use this value to create a new object. Overrides the Object.prototype.toSource() method.
Date.prototype.toString()
Returns a string representing the specified Date object. Overrides the Object.prototype.toString() method.
Date.prototype.toTimeString()
Returns the "time" portion of the Date as a human-readable string.
Date.prototype.toUTCString()
Converts a date to a string using the UTC timezone.
Date.prototype.valueOf()
Returns the primitive value of a Date object. Overrides the Object.prototype.valueOf() method.