Displays the current time and countdown Based on javascript.

Displays the current time and countdown Based on javascript.

Self-practice: By the way, I will share with you a piece of js native code.
The Date object is used to process the Date and time.
Date () returns the Date and time of the current day.
GetDate () returns a day (1 ~ 31 ).
GetDay () returns a day of a week from the Date object (0 ~ 6 ).
GetMonth () returns the month from the Date object (0 ~ 11 ).
GetFullYear () returns the year from the Date object in four digits.
Use the getFullYear () method instead of getYear.
GetHours () returns the hour of the Date object (0 ~ 23 ).
GetMinutes () returns the minute of the Date object (0 ~ 59 ).
GetSeconds () returns the number of seconds of the Date object (0 ~ 59 ).
GetMilliseconds () returns the millisecond (0 ~) of the Date object ~ 999 ).
GetTime () returns the number of milliseconds since January 1, January 1, 1970.
GetTimezoneOffset () returns the minute difference between the local time and Greenwich Mean Time (GMT.
GetUTCDate () returns the Day (1 ~ 31 ).
GetUTCDay () returns the day of the week (0 ~ 6 ).
GetUTCMonth () returns the month (0 ~ 11 ).
GetUTCFullYear () returns the four-digit year from the Date object based on the universal time.
GetUTCHours () returns the hour of the Date object based on the Universal Time (0 ~ 23 ).
GetUTCMinutes () returns the minute of the Date object based on the Universal Time (0 ~ 59 ).
GetUTCSeconds () returns the second of the Date object based on the Universal Time (0 ~ 59 ).
GetUTCMilliseconds () returns the millisecond (0 ~ 999 ).
Parse () returns the number of milliseconds from midnight, January 1, January 1, 1970 to the specified date (string.
SetDate () sets a day of the month in the Date object (1 ~ 31 ).
SetMonth () sets the month (0 ~) in the Date object ~ 11 ).
SetFullYear () sets the year (four digits) in the Date object ).
Use the setFullYear () method instead of setYear.
SetHours () sets the hour (0 ~) in the Date object ~ 23 ).
SetMinutes () sets the minute (0 ~ 59 ).
SetSeconds () sets the second (0 ~) in the Date object ~ 59 ).
SetMilliseconds () sets the millisecond (0 ~) in the Date object ~ 999 ).
SetTime () sets the Date object in milliseconds.
SetUTCDate () sets the day of the month in the Date object based on the Universal Time (1 ~ 31 ).
SetUTCMonth () sets the month (0 ~ 11 ).
SetUTCFullYear () sets the year (four digits) in the Date object based on the universal time ).
SetUTCHours () sets the hour (0 ~ 23 ).
SetUTCMinutes () sets the minute (0 ~ 59 ).
SetUTCSeconds () sets the second (0 ~) in the Date object based on the universal time ~ 59 ).
SetUTCMilliseconds () sets the millisecond (0 ~ 999 ).
ToSource () returns the source code of the object.
ToString () converts a Date object to a string.
ToTimeString () converts the time part of the Date object to a string.
ToDateString () converts the Date part of the Date object to a string.
Use the toUTCString () method instead of toGMTString.
ToUTCString () converts a Date object to a string based on the universal time.
ToLocaleString () converts a Date object to a string based on the local time format.
ToLocaleTimeString () converts the time part of the Date object to a string based on the local time format.
ToLocaleDateString () converts the Date part of the Date object to a string based on the local time format.
UTC () returns the number of milliseconds from January 1, January 1, 1970 to the specified date based on the universal time.
ValueOf () returns the original value of the Date object.
Specific implementation code:

<! DOCTYPE html> 
The above is all the content of this article, and I hope it will help you learn javascript programming.
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