JavaScript obtient 7 jours
var date = new Date();
date.setDate(date.getDate() - 13);
console.log(date);
Victorious Vole
var date = new Date();
date.setDate(date.getDate() - 13);
console.log(date);var date = new Date("08-02-2020");
date.setDate(date.getDate() + 7);
console.log(date);