Built-in objects in JavaScript -8-date objects-4

Learning Goals

1. Learn how to create date objects

2. Mastering The method of getting DateTime in a Date object

3. Learn How to set the date time in the Date object

How to create a Date object

syntax:new Date ();

Function: Create a DateTime object

Return value: Returns the current DateTime object, in the case of a reference.

Description: If you want to create a Date object based on a specific date and time, you must pass in a date that represents that day:

The number of milliseconds or a comma-separated set of parameters that represent the day of the month and seconds.

How to get the day, minute and week of the month

1.getFullYear (): returns a 4 -digit year

2.getMonth (): Returns the month of the date with a return value of 0-11

3.getDate (): returns the number of days in the month

4.getDay (): return week, return value is 0-6

5.getHours (): return hour

6.getMinutes (): return points

7.getSeconds (): return seconds

8.getTime (): Returns the number of milliseconds that represent the date

The method of setting the day of the month and the week

1.setFullYear (): returns a 4 -digit year

2.setMonth (): Returns the month of the date, starting at 0 ,0 for 1 months

3.setDate (): Set Date

4.4.setDay (): return week, starting from 0 ,0 for Sunday

5.setHours (): return hour

6.setMinutes (): return points

7.setSeconds (): return seconds

8.setTime (): sets the date in milliseconds and changes the entire date

Built-in objects in JavaScript -8-date objects-4