Skip to main content

Why does JSON.stringify screw up my datetime object?





{ id: 1533,

story_type_id: 1,

content_id: 470,

created_at: Sun, 05 Feb 2012 07:02:43 GMT,

updated_at: Sun, 05 Feb 2012 07:02:43 GMT,

type_name: 'post' }







I have a JSON object with the "datetime" field like above. It's perfect. But when I stringify it (I want to store it in cache), I get this format:







"created_at":"2012-02-05T07:02:43.000Z"







This causes problems, because when I want to JSON.parse this, suddenly it's no longer datetime format and it's incompatible with my other format.





What can I do to solve this problem? I have 'created_at' littered everywhere throughout my application. I don't want to manually change each one.


Comments

  1. There is not special way to serialize Date objects in JSON. That's why you get the standardized string representation. You need to convert them back to Date objects by passing them to the Date constructor.

    item['created_at'] = new Date(item['created_at']);


    Update: With the reviver function (see comments), you can get the Date objects back.

    var item = JSON.parse(row, function (key, value) {
    if (key === 'created_at') {
    return new Date(value);
    } else {
    return value;
    }
    });

    ReplyDelete

Post a Comment

Popular posts from this blog

Why is this Javascript much *slower* than its jQuery equivalent?

I have a HTML list of about 500 items and a "filter" box above it. I started by using jQuery to filter the list when I typed a letter (timing code added later): $('#filter').keyup( function() { var jqStart = (new Date).getTime(); var search = $(this).val().toLowerCase(); var $list = $('ul.ablist > li'); $list.each( function() { if ( $(this).text().toLowerCase().indexOf(search) === -1 ) $(this).hide(); else $(this).show(); } ); console.log('Time: ' + ((new Date).getTime() - jqStart)); } ); However, there was a couple of seconds delay after typing each letter (particularly the first letter). So I thought it may be slightly quicker if I used plain Javascript (I read recently that jQuery's each function is particularly slow). Here's my JS equivalent: document.getElementById('filter').addEventListener( 'keyup', function () { var jsStart = (new Date).getTime()...

Is it possible to have IF statement in an Echo statement in PHP

Thanks in advance. I did look at the other questions/answers that were similar and didn't find exactly what I was looking for. I'm trying to do this, am I on the right path? echo " <div id='tabs-".$match."'> <textarea id='".$match."' name='".$match."'>". if ($COLUMN_NAME === $match) { echo $FIELD_WITH_COLUMN_NAME; } else { } ."</textarea> <script type='text/javascript'> CKEDITOR.replace( '".$match."' ); </script> </div>"; I am getting the following error message in the browser: Parse error: syntax error, unexpected T_IF Please let me know if this is the right way to go about nesting an IF statement inside an echo. Thank you.