JavaScript to Subtract Days from Current Date

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Javascript to calculate current date minus 18 days

The result was this...

// Get the current date
const currentDate = new Date();

// Subtract 18 days from the current date
const eighteenDaysAgo = new Date(currentDate.getTime() - (18 * 24 * 60 * 60 * 1000));

// Format the date as a string
const formattedDate = eighteenDaysAgo.toISOString().substr(0, 10);

// Output the result
console.log(formattedDate);

With this extra info... for these specific cases chatGPT is great...

This code first creates a Date object representing the current date and time. It then subtracts 18 days from this date by creating a new Date object with a timestamp that is 18 days earlier. The resulting date is then formatted as a string in the format "YYYY-MM-DD", which is commonly used for dates in web applications. Finally, the result is output to the console using the console.log() method.