Javascript: Get days & starting day in month

Each month in calendar will have max 28, 29, 30 and 31 days.

We can get using native JS date.

let days = new Date(2022, 8, 0).getDate();
console.log(days);
> 31 // days in August

First day in each month can start from any day.

let startingDay = new Date(2022, 8).getDay();
console.log(startingDay);
> 4 // represents Thursday

For more date utils, you can refer: DateUtils

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