Let's find all the first numbers of the months of the current year that are Sunday:
let now = new Date();
let year = now.getFullYear();
for (let month = 0; month <= 11; month++) {
let date = new Date(year, month, 1);
if (date.getDay() == 0) {
console.log(year + '-' + month + '-1');
}
}
Consider the span from 2000
th
to the current year. Determine how many
times January 1
st fell on
weekend in this interval, that is,
on Saturday or Sunday.