setUTCDate() method of
Date instances changes the day of the month for this date according to universal time.
An integer from 1 to 31 representing the day of the month.
dateValue is outside of the range of date values for the month,
setDate() will update the
Date object accordingly.
For example, if 0 is provided for
dateValue, the date will be set to the last day of the previous month. If you use 40 for
dateValue, and the month stored in the
Date object is June, the day will be changed to 10 and the month will be incremented to July.
If a negative number is provided for
dateValue, the date will be set counting backwards from the last day of the previous month. -1 would result in the date being set to 1 day before the last day of the previous month.
const theBigDay = new Date();
|ECMAScript Language Specification
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