how to get 7 days before date in javascript code example

Example 1: javascript get 7 days from now

var date = new Date();
date.setDate(date.getDate() - 13);

console.log(date);

Example 2: javascript date - 7 days

var date = new Date("08-02-2020");
date.setDate(date.getDate() + 7);

console.log(date);