how to covvert date to new data format js 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 full date as string

<p>The toDateString() method converts a date to a date string:</p>

<p id="demo"></p>

<script>
var d = new Date();
document.getElementById("demo").innerHTML = d.toDateString();
</script>
//output: Fri Oct 16 2020