javascript Date from string 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 date to string

// There are two flavours
const event = new Date(1993, 6, 28, 14, 39, 7);

// The Old Skool Flava
console.log(event.toString());
// expected output: Wed Jul 28 1993 14:39:07 GMT+0200 (CEST)
// (note: your timezone may vary)

// The Hipster way ;)
console.log(event.toDateString());
// expected output: Wed Jul 28 1993

Example 3: js string to date

var myDate = new Date("2013/1/16");

var str = "2013/1/16";
var strToDate = new Date(str);

Example 4: javascript format date

var options = { weekday: 'long', year: 'numeric', month: 'long', day: 'numeric' };
var today  = new Date();

console.log(today.toLocaleDateString("en-US")); // 9/17/2016
console.log(today.toLocaleDateString("en-US", options)); // Saturday, September 17, 2016
console.log(today.toLocaleDateString("hi-IN", options));

Example 5: parse date from string in js

Date.parse(dateString)
//dateString is like 2020-10-10 / 2020-10-10T10:20:20

Example 6: how to validate from and to date using date.parse in javascript

var stringval = '01/03/2012';
var testdate;

try {
  testdate = $.datepicker.parseDate('mm/dd/yy', stringval);
             // Notice 'yy' indicates a 4-digit year value
} catch (e)
{
 alert(stringval + ' is not valid.  Format must be MM/DD/YYYY ' +
       'and the date value must be valid for the calendar.';
}