JavaScript Date Object
Date Object
The Date object is used to handle dates and times.
Creating a Date object: new Date()
The following four methods can also create a Date object:
var d = new Date();
var d = new Date(milliseconds); // Parameter is milliseconds
var d = new Date(dateString);
var d = new Date(year, month, day, hours, minutes, seconds, milliseconds);
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The milliseconds parameter is a Unix timestamp, which is an integer value representing the number of milliseconds since January 1, 1970, 00:00:00 UTC (the Unix epoch).
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The dateString parameter represents a date as a string value.
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year, month, day, hours, minutes, seconds, milliseconds represent the year, month, day, hour, minute, second, and millisecond, respectively.
For a more complete date and time tutorial, refer to the JavaScript Date Object Tutorial.
Date Object Properties
| Property | Description |
|---|---|
| constructor | Returns a reference to the Date function that created the object. |
| prototype | Allows you to add properties and methods to the object. |
Date Object Methods
| Method | Description |
|---|---|
| getDate() | Returns the day of the month (1 ~ 31) from the Date object. |
| getDay() | Returns the day of the week (0 ~ 6) from the Date object. |
| getFullYear() | Returns the year in four digits from the Date object. |
| getHours() | Returns the hour (0 ~ 23) from the Date object. |
| getMilliseconds() | Returns the milliseconds (0 ~ 999) from the Date object. |
| getMinutes() | Returns the minutes (0 ~ 59) from the Date object. |
| getMonth() | Returns the month (0 ~ 11) from the Date object. |
| getSeconds() | Returns the seconds (0 ~ 59) from the Date object. |
| getTime() | Returns the number of milliseconds since January 1, 1970. |
| getTimezoneOffset() | Returns the difference in minutes between local time and Greenwich Mean Time (GMT). |
| getUTCDate() | Returns the day of the month (1 ~ 31) from the Date object according to universal time. |
| getUTCDay() | Returns the day of the week (0 ~ 6) from the Date object according to universal time. |
| getUTCFullYear() | Returns the year in four digits from the Date object according to universal time. |
| getUTCHours() | Returns the hour (0 ~ 23) from the Date object according to universal time. |
| getUTCMilliseconds() | Returns the milliseconds (0 ~ 999) from the Date object according to universal time. |
| getUTCMinutes() | Returns the minutes (0 ~ 59) from the Date object according to universal time. |
| getUTCMonth() | Returns the month (0 ~ 11) from the Date object according to universal time. |
| getUTCSeconds() | Returns the seconds (0 ~ 59) from the Date object according to universal time. |
| getYear() | Deprecated. Use getFullYear() method instead. |
| parse() | Returns the number of milliseconds from January 1, 1970, to the specified date (string). |
| setDate() | Sets the day of the month (1 ~ 31) in the Date object. |
| setFullYear() | Sets the year in the Date object with four digits. |
| setHours() | Sets the hours (0 ~ 23) in the Date object. |
| setMilliseconds() | Sets the milliseconds (0 ~ 999) in the Date object. |
| setMinutes() | Sets the minutes (0 ~ 59) in the Date object. |
| setMonth() | Sets the month (0 ~ 11) in the Date object. |
| setSeconds() | Sets the seconds (0 ~ 59) in the Date object. |
| setTime() | Sets the Date object in milliseconds. |
| setUTCDate() | Sets the day of the month (1 ~ 31) in the Date object according to universal time. |
| setUTCFullYear() | Sets the year in the Date object with four digits according to universal time. |
| setUTCHours() | Sets the hours (0 ~ 23) in the Date object according to universal time. |
| setUTCMilliseconds() | Sets the milliseconds (0 ~ 999) in the Date object according to universal time. |
| setUTCMinutes() | Sets the minutes (0 ~ 59) in the Date object according to universal time. |
| setUTCMonth() | Sets the month (0 ~ 11) in the Date object according to universal time. |
| setUTCSeconds() | Sets the seconds (0 ~ 59) in the Date object according to universal time. |
| setYear() | Deprecated. Use setFullYear() method instead. |
| toDateString() | Converts the date portion of a Date object into a string. |
| toGMTString() | Deprecated. Use toUTCString() method instead. |
| toISOString() | Returns the date as a string, using the ISO standard. |
| toJSON() | Returns the date as a string, formatted as a JSON date. |
| toLocaleDateString() | Converts the date portion of a Date object to a string, using locale conventions. |
| toLocaleTimeString() | Converts the time portion of a Date object to a string, using locale conventions. |
| toLocaleString() | Converts a Date object to a string, using locale conventions. |
| toString() | Converts a Date object to a string. |
| toTimeString() | Converts the time portion of a Date object to a string. |
| toUTCString() | Converts a Date object to a string, according to universal time. Example: var today = new Date();<br>var UTCstring = today.toUTCString(); |
| UTC() | Returns the number of milliseconds since January 1, 1970, to the specified date according to universal time. |
| valueOf() | Returns the primitive value of a Date object. |