Chapter 10 Date and Time

The date object stores date and time and provides methods for managing it. Date objects are static and use a browser's default timezone to display the date as a full-text string.

To create date we use a new Date() constructor and can be created in the following ways.

new Date()
new Date(date string)
new Date(year,month)
new Date(year,month,day)
new Date(year,month,day,hours)
new Date(year,month,day,hours,minutes)
new Date(year,month,day,hours,minutes,seconds)
new Date(year,month,day,hours,minutes,seconds,ms)
new Date(milliseconds)

Months can be specified from 0 to 11, more than that will result in an overflow to the next year.

Methods and properties supported by date are described below:

Name	Description
`constructor`	Returns function that created the Date object's prototype
`getDate()`	Returns the day (1-31) of a month
`getDay()`	Returns the day (0-6) of a week
`getFullYear()`	Returns the year (4 digits)
`getHours()`	Returns the hour (0-23)
`getMilliseconds()`	Returns the milliseconds (0-999)
`getMinutes()`	Returns the minutes (0-59)
`getMonth()`	Returns the month (0-11)
`getSeconds()`	Returns the seconds (0-59)
`getTime()`	Returns the numeric value of a specified date in milliseconds since midnight Jan 1 1970
`getTimezoneOffset()`	Returns timezone offset in minutes
`getUTCDate()`	Returns the day (1-31) of a month according to universal time
`getUTCDay()`	Returns the day (0-6) according to universal time
`getUTCFullYear()`	Returns the year (4-digits) according to universal time
`getUTCHours()`	Returns the hours (0-23) according to universal time
`getUTCMilliseconds()`	Returns the milliseconds (0-999) according to universal time
`getUTCMinutes()`	Returns the minutes (0-59) according to universal time
`getUTCMonth()`	Returns the month (0-11) according to universal time
`getUTCSeconds()`	Returns the seconds (0-59) according to universal time
`now()`	Returns the numeric value in milliseconds since midnight Jan 1, 1970
`parse()`	Parses the date string and returns the numeric value in milliseconds since midnight Jan 1, 1970
`prototype`	Allows to add properties
`setDate()`	Sets the day of a month
`setFullYear()`	Sets the year
`setHours()`	Sets the hour
`setMilliseconds()`	Sets the milliseconds
`setMinutes()`	Sets the minutes
`setMonth()`	Sets the month
`setSeconds()`	Sets the second
`setTime()`	Sets the time
`setUTCDate()`	Sets the day of the month according to universal time
`setUTCFullYear()`	Sets the year according to the universal time
`setUTCHours()`	Sets the hour according to the universal time
`setUTCMilliseconds()`	Sets the milliseconds according to the universal time
`setUTCMinutes()`	Sets the minutes according to the universal time
`setUTCMonth()`	Sets the month according to the universal time
`setUTCSeconds()`	Sets the second according to the universal time
`toDateString()`	Returns the date in human readable format
`toISOString()`	Returns the date according to the ISO format
`toJSON()`	Returns the date in a string, formatted as a JSON date
`toLocaleDateString()`	Returns the date in a string using locale conventions
`toLocaleTimeString()`	Returns the time in a string using locale conventions
`toLocaleString()`	Returns date using locale conventions
`toString()`	Returns string representation of the specified date
`toTimeString()`	Returns the time portion into a human-readable format
`toUTCString()`	Converts date into a string according to the universal format
`toUTC()`	Returns the milliseconds since midnight Jan 1 1970 in UTC format
`valueOf()`	Returns the primitive value of `Date`

Date and Time

Chapter 10

Date and Time

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