Convert dd-mm-yyyy string to date
JavascriptDateJavascript Problem Overview
i am trying to convert a string in the format dd-mm-yyyy into a date object in JavaScript using the following:
var from = $("#datepicker").val();
var to = $("#datepickertwo").val();
var f = new Date(from);
var t = new Date(to);
("#datepicker").val()
contains a date in the format dd-mm-yyyy.
When I do the following, I get "Invalid Date":
alert(f);
Is this because of the '-' symbol? How can I overcome this?
Javascript Solutions
Solution 1 - Javascript
Split on "-"
Parse the string into the parts you need:
var from = $("#datepicker").val().split("-")
var f = new Date(from[2], from[1] - 1, from[0])
Use regex
var date = new Date("15-05-2018".replace( /(\d{2})-(\d{2})-(\d{4})/, "$2/$1/$3"))
Why not use regex?
Because you know you'll be working on a string made up of three parts, separated by hyphens.
However, if you were looking for that same string within another string, regex would be the way to go.
Reuse
Because you're doing this more than once in your sample code, and maybe elsewhere in your code base, wrap it up in a function:
function toDate(dateStr) {
var parts = dateStr.split("-")
return new Date(parts[2], parts[1] - 1, parts[0])
}
Using as:
var from = $("#datepicker").val()
var to = $("#datepickertwo").val()
var f = toDate(from)
var t = toDate(to)
Or if you don't mind jQuery in your function:
function toDate(selector) {
var from = $(selector).val().split("-")
return new Date(from[2], from[1] - 1, from[0])
}
Using as:
var f = toDate("#datepicker")
var t = toDate("#datepickertwo")
Modern JavaScript
If you're able to use more modern JS, array destructuring is a nice touch also:
const toDate = (dateStr) => {
const [day, month, year] = dateStr.split("-")
return new Date(year, month - 1, day)
}
Solution 2 - Javascript
regular expression example:
new Date( "13-01-2011".replace( /(\d{2})-(\d{2})-(\d{4})/, "$2/$1/$3") );
Solution 3 - Javascript
Another possibility:
var from = "10-11-2011";
var numbers = from.match(/\d+/g);
var date = new Date(numbers[2], numbers[0]-1, numbers[1]);
Match the digits and reorder them
Solution 4 - Javascript
Using moment.js example:
var from = '11-04-2017' // OR $("#datepicker").val();
var milliseconds = moment(from, "DD-MM-YYYY").format('x');
var f = new Date(milliseconds)
Solution 5 - Javascript
var from = $("#datepicker").val();
var f = $.datepicker.parseDate("d-m-Y", from);
Solution 6 - Javascript
Use this format: myDate = new Date('2011-01-03'); // Mon Jan 03 2011 00:00:00
Solution 7 - Javascript
You can also write a date inside the parentheses of the Date()
object, like these:
new Date("Month dd, yyyy hh:mm:ss")
new Date("Month dd, yyyy")
new Date(yyyy,mm,dd,hh,mm,ss)
new Date(yyyy,mm,dd)
new Date(milliseconds)
Solution 8 - Javascript
The accepted answer kinda has a bug
var from = $("#datepicker").val().split("-")
var f = new Date(from[2], from[1] - 1, from[0])
Consider if the datepicker contains "77-78-7980" which is obviously not a valid date. This would result in:
var f = new Date(7980, 77, 77);
=> Date 7986-08-15T22:00:00.000Z
Which is probably not the desired result.
The reason for this is explained on the MDN site:
> Where Date is called as a constructor with more than one argument, if values are greater than their logical range (e.g. 13 is provided as the month value or 70 for the minute value), the adjacent value will be adjusted. E.g. new Date(2013, 13, 1)
is equivalent to new Date(2014, 1, 1)
.
A better way to solve the problem is:
const stringToDate = function(dateString) {
const [dd, mm, yyyy] = dateString.split("-");
return new Date(`${yyyy}-${mm}-${dd}`);
};
console.log(stringToDate('04-04-2019'));
// Date 2019-04-04T00:00:00.000Z
console.log(stringToDate('77-78-7980'));
// Invalid Date
This gives you the possibility to handle invalid input.
For example:
const date = stringToDate("77-78-7980");
if (date === "Invalid Date" || isNaN(date)) {
console.log("It's all gone bad");
} else {
// Do something with your valid date here
}
Solution 9 - Javascript
In my case
new Date("20151102034013".replace(/(\d{4})(\d{2})(\d{2})(\d{2})(\d{2})(\d{2})/, "$1-$2-$3T$4:$5:$6"))
Result: Mon Nov 02 2015 04:40:13 GMT+0100 (CET) then I use .getTime() to work with milliseconds
Solution 10 - Javascript
You can use an external library to help you out.
http://www.mattkruse.com/javascript/date/source.html
getDateFromFormat(val,format);
Also see this: https://stackoverflow.com/questions/1576753/parse-date-string-in-javascript
Solution 11 - Javascript
Take a look at Datejs for all those petty date related issues.. You could solve this by parseDate function too
Solution 12 - Javascript
You can just:
var f = new Date(from.split('-').reverse().join('/'));
Solution 13 - Javascript
You could use a Regexp.
var result = /^(\d{2})-(\d{2})-(\d{4})$/.exec($("#datepicker").val());
if (result) {
from = new Date(
parseInt(result[3], 10),
parseInt(result[2], 10) - 1,
parseInt(result[1], 10)
);
}
Solution 14 - Javascript
let dateString = '13-02-2021' //date string in dd-mm-yyyy format
let dateArray = dateString.split("-");
//dateArray[2] equals to 2021
//dateArray[1] equals to 02
//dateArray[0] equals to 13
// using template literals below
let dateObj = new Date(`${dateArray[2]}-${dateArray[1]}-${dateArray[0]}`);
// dateObj equals to Sat Feb 13 2021 05:30:00 GMT+0530 (India Standard Time)
//I'm from India so its showing GMT+0530
Solution 15 - Javascript
new Date().toLocaleDateString();
simple as that, just pass your date to js Date Object