function subtractDays(date, days) {
let result = new Date(date);
result.setDate(result.getDate() - days);
return result;
}
function formatDate(date) {
return (date.getMonth() + 1) + '/' + date.getDate() + '/' + date.getFullYear();
}
const dt = formatDate(subtractDays(new Date(), 4));
console.log(dt);
/*
run:
"1/31/2021"
*/