Converting NET DateTime to JSON

Question

Possible Duplicate    How to format a JSON date        My webs service is returning a DateTime to a jQuery call  The service returns the data in this format    Date 1245398693390     How can I convert this into a JavaScript-friendly date

User · Answer

The previous answers all state that you can do the following:

var d = eval(net_datetime.slice(1, -1));

However, this doesn't work in either Chrome or FF because what's getting evaluated literally is:

// returns the current timestamp instead of the specified epoch timestamp
var d = Date([epoch timestamp]);

The correct way to do this is:

var d = eval("new " + net_datetime.slice(1, -1)); // which parses to

var d = new Date([epoch timestamp]);

User · Answer

What is returned is milliseconds since epoch  You could do   var d   new Date    d setTime 1245398693390   document write d     On how to format the date exactly as you want  see full Date reference at http   www w3schools com jsref jsref obj date asp  You could strip the non-digits by either parsing the integer  as suggested here    var date   new Date parseInt jsonDate substr 6       Or applying the following regular expression  from Tominator in the comments    var jsonDate   jqueryCall        returns   Date 1245398693390      var re    -  d     var m   re exec jsonDate    var d   new Date parseInt m 0

User · Answer

I have been using this method for a while   using System   public static class ExtensionMethods        returns the number of milliseconds since Jan 1  1970  useful for converting C  dates to JS dates    public static double UnixTicks this DateTime dt          DateTime d1   new DateTime 1970  1  1       DateTime d2   dt ToUniversalTime        TimeSpan ts   new TimeSpan d2 Ticks - d1 Ticks       return ts TotalMilliseconds          Assuming you are developing against  NET 3 5  it s a straight copy paste   You can otherwise port it   You can encapsulate this in a JSON object  or simply write it to the response stream   On the Javascript JSON side  you convert this to a date by simply passing the ticks into a new Date object   jQuery ajax           success  function msg        var d   new Date msg

User · Answer

http   stevenlevithan com assets misc date format js  var date   eval data Data Entity Slrq replace    Date    d       gi   new Date  1        alert date format  yyyy-MM-dd HH mm ss       alert dateFormat date   yyyy-MM-dd HH mm ss

User · Answer

If you pass a DateTime from a  Net code to a javascript code   C    DateTime net datetime   DateTime Now    javascript treats it as a string  like   Date 1245398693390      You can convert it as fllowing      convert the string to date correctly var d   eval net datetime slice 1  -1     or      convert the string to date correctly var d   eval   Date 1245398693390    slice 1  -1

User · Answer

To parse the date string using String replace with backreference   var milli     Date 1245398693390    replace    Date   -  d           1    var d   new Date parseInt milli

User · Answer

You can try a 3rd party library like json net  There s documention on the project site   It does say it requires  net 3 5   Otherwise there s another one called Nii json which i believe is a port from java   I found a link to it on this blog

User · Answer

Thought i d add my solution that i ve been using   If you re using the System Web Script Serialization JavaScriptSerializer   then the time returned isn t going to be specific to your timezone  To fix this you ll also want to use dte getTimezoneOffset   to get it back to your correct time   String prototype toDateFromAspNet   function         var dte   eval  new     this replace     g                  dte setMinutes dte getMinutes   - dte getTimezoneOffset         return dte      now you ll just call    Date 1245398693390    toDateFromAspNet         Fri Jun 19 2009 00 04 53 GMT-0400  Eastern Daylight Time

User · Answer

the conversion from 1970 1 1 needs the double rounded to zero decimal places i thinks  DateTime d1   new DateTime 1970  1  1   DateTime d2   dt ToUniversalTime    TimeSpan ts   new TimeSpan d2 Ticks - d1 Ticks   return Math Round  ts TotalMilliseconds 0     on the client side i use  new Date  data replace   D g

User · Answer

If you re having trouble getting to the time information  you can try something like this       d date   d date replace   Date             d date   d date replace                  var expDate   new Date parseInt d date

[javascript] Converting .NET DateTime to JSON

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