JSFiddle - React, Tailwind, and code Playground

JavaScript

var curr = new Date; // get current date
var first = curr.getDate() - curr.getDay(); // First day is the day of the month - the day of the week
var last = first + 6; // last day is the first day + 6
var startDate = new Date(curr.setDate(first));
startDate = "" + (startDate.getMonth() + 1) + "/" + startDate.getDate() + "/" + startDate.getFullYear();
var endDate = new Date(curr.setDate(last));
endDate = "" + (endDate.getMonth() + 1) + "/" + endDate.getDate() + "/" + endDate.getFullYear();

console.log(startDate)
console.log(endDate)