Here is one way in which you can get x number of days in the past from current date:
Step 1. Get value of a day in milliseconds
Step 2. Get today's date using Date() object
Step 3. Convert date string to be checked to date object within Date()
Step 4. Then convert date object into milliseconds
Step 5. Subtract date to be checked from x number of days
Here are a couple of examples below:
function pastAmountOfDays (dte, x) {
const day = 1000 * 60 * 60 * 24; // get one day in milliseconds
let now = new Date(); //get today's date
let checkDate = new Date(dte); // convert date string to object
now = new Date(now.getTime() - (x * day)); //difference between x date and date being checked in milliseconds
return checkDate.getDate() < now.getDate(); // if date being checked is still greater than today's date then we are past x days
}
console.log(pastAmountOfDays("2022-08-12", 3)); //true
console.log(pastAmountOfDays("2022-08-16", 3)); //false