format a date in to the format 'yyyy-mm-dd' in javascript

index.tsx
let date = new Date(); // current date
let year = date.getFullYear();
let month = ('0' + (date.getMonth() + 1)).slice(-2); // add leading zero if needed
let day = ('0' + date.getDate()).slice(-2); // add leading zero if needed
let formattedDate = year + '-' + month + '-' + day;
console.log(formattedDate); // output: '2021-08-17' (for example)
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