Why are my dates aren't working in TypeScript?

Question

I'm trying to initialize a Date object by doing:

let date = new Date(2020, 12, 5, 0, 0, 0, 0);

then when I do

date.getMonth()

I get 0 .

Can someone help me?

Answer 1

Months are zero-indexed, so the month you want to initialize it with is actually 11. It doesn't know what to do with 12, that would be month number 13.

Answer 2

date.getMonth() returns the month in the specified date according to local time, as a zero-based value (where zero indicates the first month of the year) according to the docs .

Answer 3

The month argument of Date is zero based - 0 represents January and 11 represents December. Assuming you meant to create an object for the fifth of December 2020, you should use 11, not 12:

let date = new Date(2020, 11, 5, 0, 0, 0, 0);
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