revision:
Date() : returns today's date and time.
getDate() : returns the day of the month for the specified date according to local time.
getDay() : returns the day of the week for the specified date according to local time.
getFullYear() : returns the year of the specified date according to local time.
getHours() : returns the hour in the specified date according to local time.
getMilliseconds() : returns the milliseconds in the specified date according to local time.
getMinutes() : returns the minutes in the specified date according to local time.
getMonth() : returns the month in the specified date according to local time.
getSeconds() : returns the seconds in the specified date according to local time.
getTime() : returns the numeric value of the specified date as the number of milliseconds since January 1, 1970, 00:00:00 UTC.
getTimezoneOffset() : returns the time-zone offset in minutes for the current locale.
getUTCDate() : returns the day (date) of the month in the specified date according to universal time.
getUTCDay() : returns the day of the week in the specified date according to universal time.
getUTCFullYear() : returns the year in the specified date according to universal time.
getUTCHours() : returns the hours in the specified date according to universal time.
getUTCMilliseconds() : returns the milliseconds in the specified date according to universal time.
getUTCMinutes() : returns the minutes in the specified date according to universal time.
getUTCMonth() : returns the month in the specified date according to universal time.
getUTCSeconds() : returns the seconds in the specified date according to universal time.
getYear() : deprecated - returns the year in the specified date according to local time. Use getFullYear instead.
setDate() : sets the day of the month for a specified date according to local time.
setFullYear() : sets the full year for a specified date according to local time.
setHours() : sets the hours for a specified date according to local time.
setMilliseconds() : sets the milliseconds for a specified date according to local time.
setMinutes() : sets the minutes for a specified date according to local time.
setMonth() : sets the month for a specified date according to local time.
setSeconds() : sets the seconds for a specified date according to local time.
setTime() : sets the Date object to the time represented by a number of milliseconds since January 1, 1970, 00:00:00 UTC.
setUTCDate() : sets the day of the month for a specified date according to universal time.
setUTCFullYear() : sets the full year for a specified date according to universal time.
setUTCHours() : sets the hour for a specified date according to universal time.
setUTCMilliseconds() : sets the milliseconds for a specified date according to universal time.
setUTCMinutes() : sets the minutes for a specified date according to universal time.
setUTCMonth() : sets the month for a specified date according to universal time.
setUTCSeconds() : sets the seconds for a specified date according to universal time.
setYear() : deprecated - sets the year for a specified date according to local time. Use setFullYear instead.
toDateString() : returns the "date" portion of the Date as a human-readable string.
toGMTString() : deprecated - converts a date to a string, using the Internet GMT conventions. Use toUTCString instead.
toLocaleDateString() : returns the "date" portion of the Date as a string, using the current locale's conventions.
toLocaleFormat() : converts a date to a string, using a format string.
toLocaleString() : converts a date to a string, using the current locale's conventions.
toLocaleTimeString() : returns the "time" portion of the Date as a string, using the current locale's conventions.
toSource() : returns a string representing the source for an equivalent Date object; you can use this value to create a new object.
toString() : returns a string representing the specified Date object.
toTimeString() : returns the "time" portion of the Date as a human-readable string.
toUTCString() : converts a date to a string, using the universal time convention.
valueOf() : returns the primitive value of a Date object.
Date.parse() : parses a string representation of a date and time and returns the internal millisecond representation of that date.
Date.UTC() : returns the millisecond representation of the specified UTC date and time.
<div>
<p class="spec" id="date1"></p>
<p class="spec" id="date2"></p>
<p class="spec" id="date3"></p>
<p class="spec" id="date4"></p>
<p class="spec" id="date5"></p>
<p class="spec" id="date6"></p>
<p class="spec" id="date7"></p>
<p class="spec" id="date8"></p>
<p class="spec" id="date9"></p>
<p class="spec" id="date10"></p>
<p class="spec" id="date11"></p>
<p class="spec" id="date12"></p>
<p class="spec" id="date13"></p>
<p class="spec" id="date14"></p>
<p class="spec" id="date15"></p>
<p class="spec" id="date16"></p>
<p class="spec" id="date17"></p>
<p class="spec" id="date18"></p>
<p class="spec" id="date19"></p>
<p class="spec" id="date20"></p>
<p class="spec" id="date21"></p>
<p class="spec" id="date22"></p>
<p class="spec" id="date23"></p>
</div>
<script>
const time = new Date();
document.getElementById("date1").innerHTML = "time() : " + time;
const d = new Date();
let text = d.constructor;
document.getElementById("date2").innerHTML = "constuctor : " + text;
let day = d.getDate();
document.getElementById("date3").innerHTML = "getDate : " + day;
let day1 = d.getDay()
document.getElementById("date4").innerHTML = "getDay : " + day1;
let year = d.getFullYear();
document.getElementById("date5").innerHTML = "getFullYear: " + year;
let hour = d.getHours();
document.getElementById("date6").innerHTML = "getHours: " + hour;
let ms = d.getMilliseconds();
document.getElementById("date7").innerHTML = "getMilliseconds : " + ms;
let minutes = d.getMinutes();
document.getElementById("date8").innerHTML = "getMinutes : " + minutes;
let month = d.getMonth();
document.getElementById("date9").innerHTML = "getMonth : " + month;
let seconds = d.getSeconds();
document.getElementById("date10").innerHTML = "getSeconds : " + seconds;
let time1 = d.getTime();
document.getElementById("date11").innerHTML = "getTime : " + time1;
let diff = d.getTimezoneOffset();
document.getElementById("date12").innerHTML = "getTimezoneOffset: " + diff;
let day2 = d.getUTCDate();
document.getElementById("date13").innerHTML = "getUTCDate : " + day2;
let day3 = d.getUTCDay();
document.getElementById("date14").innerHTML = "getUTCDay : " + day3;
let year2 = d.getUTCFullYear();
document.getElementById("date15").innerHTML = "getUTCFullYear : " + year2;
let hour2 = d.getUTCHours();
document.getElementById("date16").innerHTML = "getUTCHours : " + hour2;
let ms2 = d.getUTCMilliseconds();
document.getElementById("date17").innerHTML = "geUTCtMilliseconds : " + ms2;
let minutes2 = d.getUTCMinutes();
document.getElementById("date18").innerHTML = "getUTCMinutes : " + minutes2;
let month2 = d.getUTCMonth();
document.getElementById("date19").innerHTML = "getUTCMonth : " + month2;
let seconds2 = d.getUTCSeconds();
document.getElementById("date20").innerHTML = "getUTCSeconds : " + seconds2;
let ms3 = Date.now();
document.getElementById("date21").innerHTML = "Date.now : " + ms3;
const dd= new Date();
dd.setDate(15);
document.getElementById("date22").innerHTML = "setDate : " + dd;
dd.setFullYear(2024)
document.getElementById("date23").innerHTML = " setFullYear: " + dd;
</script>