Pass an array to the new Set() constructor:
// Create a Set
const letters = new Set(["a","b","c"]);
letters.add("d");
letters.add("e");
If you add equal elements, only the first will be saved : Continue reading JavaScript Set Methods
Set Date methods let you set date values (years, months, days, hours, minutes, seconds, milliseconds) for a Date Object.
Set Date methods are used for setting a part of a date:
| Method | Description |
|---|---|
| setDate() | Set the day as a number (1-31) |
| setFullYear() | Set the year (yyyy) |
| setHours() | Set the hour (0-23) |
| setMilliseconds() | Set the milliseconds (0-999) |
| setMinutes() | Set the minutes (0-59) |
| setMonth() | Set the month (0-11) |
| setSeconds() | Set the seconds (0-59) |
| setTime() | Set the time (milliseconds since January 1, 1970) |
The setFullYear() method sets the year of a date object. In this example to 2020 : Continue reading JavaScript Set Date Methods