js convert date YYYY-MM-DD code example
Example 1: javascript convert date to yyyy-mm-dd
// `date` is a `Date` object
const formatYmd = date => date.toISOString().slice(0, 10);
// Example
formatYmd(new Date()); // 2020-05-06
Example 2: javascript convert date from mm/dd/yyyy to yyyymmdd
var yourdate = date.split("/").reverse().join("-");