How can I convert string to datetime with format specification in JavaScript?

Question

How can I convert a string to a date time object in javascript by specifying a format string?

I am looking for something like:

var dateTime = convert         


        

Answer 1

//Here pdate is the string date time
var date1=GetDate(pdate);
    function GetDate(a){
        var dateString = a.substr(6);
        var currentTime = new Date(parseInt(dateString ));
        var month =("0"+ (currentTime.getMonth() + 1)).slice(-2);
        var day =("0"+ currentTime.getDate()).slice(-2);
        var year = currentTime.getFullYear();
        var date = day + "/" + month + "/" + year;
        return date;
    }

Answer 2

Just to give my 5 cents.

My date format is dd.mm.yyyy (UK format) and none of the above examples were working for me. All the parsers were considering mm as day and dd as month.

I've found this library: http://joey.mazzarelli.com/2008/11/25/easy-date-parsing-with-javascript/ and it worked, because you can say the order of the fields like this:

>>console.log(new Date(Date.fromString('09.05.2012', {order: 'DMY'})));
Wed May 09 2012 00:00:00 GMT+0300 (EEST)

I hope that helps someone.

Answer 3

External library is an overkill for parsing one or two dates, so I made my own function using Oli's and Christoph's solutions. Here in central Europe we rarely use aything but the OP's format, so this should be enough for simple apps used here.

function ParseDate(dateString) {
    //dd.mm.yyyy, or dd.mm.yy
    var dateArr = dateString.split(".");
    if (dateArr.length == 1) {
        return null;    //wrong format
    }
    //parse time after the year - separated by space
    var spacePos = dateArr[2].indexOf(" ");
    if(spacePos > 1) {
        var timeString = dateArr[2].substr(spacePos + 1);
        var timeArr = timeString.split(":");
        dateArr[2] = dateArr[2].substr(0, spacePos);
        if (timeArr.length == 2) {
            //minutes only
            return new Date(parseInt(dateArr[2]), parseInt(dateArr[1]-1), parseInt(dateArr[0]), parseInt(timeArr[0]), parseInt(timeArr[1]));
        } else {
            //including seconds
            return new Date(parseInt(dateArr[2]), parseInt(dateArr[1]-1), parseInt(dateArr[0]), parseInt(timeArr[0]), parseInt(timeArr[1]), parseInt(timeArr[2]))
        }
    } else {
        //gotcha at months - January is at 0, not 1 as one would expect
        return new Date(parseInt(dateArr[2]), parseInt(dateArr[1] - 1), parseInt(dateArr[0]));
    }
}

Answer 4

var temp1 = "";
var temp2 = "";

var str1 = fd; 
var str2 = td;

var dt1  = str1.substring(0,2);
var dt2  = str2.substring(0,2);

var mon1 = str1.substring(3,5);
var mon2 = str2.substring(3,5);

var yr1  = str1.substring(6,10);  
var yr2  = str2.substring(6,10); 

temp1 = mon1 + "/" + dt1 + "/" + yr1;
temp2 = mon2 + "/" + dt2 + "/" + yr2;

var cfd = Date.parse(temp1);
var ctd = Date.parse(temp2);

var date1 = new Date(cfd); 
var date2 = new Date(ctd);

if(date1 > date2) { 
    alert("FROM DATE SHOULD BE MORE THAN TO DATE");
}

Answer 5

Moment.js will handle this:

var momentDate = moment('23.11.2009 12:34:56', 'DD.MM.YYYY HH:mm:ss');
var date = momentDate.;

Answer 6

Date.parse() is fairly intelligent but I can't guarantee that format will parse correctly.

If it doesn't, you'd have to find something to bridge the two. Your example is pretty simple (being purely numbers) so a touch of REGEX (or even string.split() -- might be faster) paired with some parseInt() will allow you to quickly make a date.