Moment.js Sandbox

HTML

<script src="//cdnjs.cloudflare.com/ajax/libs/moment.js/2.2.1/moment.min.js"></script>

JavaScript

// Date format is YYYY-MM-DD
const dateRange = {
    "2021-08-06 - 2021-09-06": 0,
    "2021-09-06 - 2021-10-06": 0
}
const dateArr = ['2021-08-06', '2021-11-06'];
const desiredRes = [{key:`2021-08-06 - 2021-09-06`, value: 1 }, {key: `2021-09-06 - 2021-10-06`, value: 0}]
console.log(desiredRes);