![]() Integer value representing the month, beginning with 0 for January to 11 for December. Values from 0 to 99 map to the years 1900 to 1999. For example, new Date(2020, 5, 0) will return May 31st, 2020. Similarly, if any parameter underflows, it "borrows" from the higher positions. For example, if a monthIndex greater than 11 is passed in, those months will cause the year to increment if a minutes greater than 59 is passed in, hours will increment accordingly, etc. If any parameter overflows its defined bounds, it "carries over". ![]() The parameter values are all evaluated against the local time zone, rather than UTC. Any missing fields are given the lowest possible value ( 1 for day and 0 for every other component). Given at least a year and month, this form of Date() returns a Date object whose component values (year, month, day, hour, minute, second, and millisecond) all come from the following parameters. ![]() Individual date and time component values Otherwise, the resulting primitive is further coerced to a number and treated as a timestamp. If the result is a string, it will be parsed as a date string. All other values are converted to primitives. When one parameter is passed to the Date() constructor, Date instances are specially treated. This is equivalent to new Date(dateObject.valueOf()), except the valueOf() method is not called. This effectively makes a copy of the existing Date object with the same date and time. Date object dateObjectĪn existing Date object. You are therefore also advised to make sure the input format is consistent between the two types. "") are treated as UTC, while date-time strings (e.g. A library can help if many different formats are to be accommodated.ĭate-only strings (e.g. Support for RFC 2822 format strings is by convention only. Note: When parsing date strings with the Date constructor (and Date.parse, they are equivalent), always make sure that the input conforms to the ISO 8601 format ( YYYY-MM-DDTHH:mm:ss.sssZ) - the parsing behavior with other formats is implementation-defined and may not work across all browsers. Object.prototype._lookupSetter_() Deprecated.Object.prototype._lookupGetter_() Deprecated.Object.prototype._defineSetter_() Deprecated.Object.prototype._defineGetter_() Deprecated.
0 Comments
Leave a Reply. |