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Lost here. The following works in Chrome wonderfully, but in IE and FireFox "undefined undefined NaN Nan" is returned

What am I missing?

var dateString = $(this).attr("ows_EventDate");
var current_date = new Date(dateString);
var month_names = [];
month_names[month_names.length] = "January";
month_names[month_names.length] = "February";
month_names[month_names.length] = "March";
month_names[month_names.length] = "April";
month_names[month_names.length] = "May";
month_names[month_names.length] = "June";
month_names[month_names.length] = "July";
month_names[month_names.length] = "August";
month_names[month_names.length] = "September";
month_names[month_names.length] = "October";
month_names[month_names.length] = "November";
month_names[month_names.length] = "December";
var day_names = [];
day_names[day_names.length] = "Sunday";
day_names[day_names.length] = "Monday";
day_names[day_names.length] = "Tuesday";
day_names[day_names.length] = "Wednesday";
day_names[day_names.length] = "Thursday";
day_names[day_names.length] = "Friday";
day_names[day_names.length] = "Saturday";

var startU = (day_names[current_date.getDay()]) + (", ") 
  + (month_names[current_date.getMonth()]) + (" ") + current_date.getDate() 
  + (" ") + (" ") + current_date.getFullYear();

Chrome returns... Thursday, February 23 2012 etc, etc just perfectly.

Lost here. The following works in Chrome wonderfully, but in IE and FireFox "undefined undefined NaN Nan" is returned

What am I missing?

var dateString = $(this).attr("ows_EventDate");
var current_date = new Date(dateString);
var month_names = [];
month_names[month_names.length] = "January";
month_names[month_names.length] = "February";
month_names[month_names.length] = "March";
month_names[month_names.length] = "April";
month_names[month_names.length] = "May";
month_names[month_names.length] = "June";
month_names[month_names.length] = "July";
month_names[month_names.length] = "August";
month_names[month_names.length] = "September";
month_names[month_names.length] = "October";
month_names[month_names.length] = "November";
month_names[month_names.length] = "December";
var day_names = [];
day_names[day_names.length] = "Sunday";
day_names[day_names.length] = "Monday";
day_names[day_names.length] = "Tuesday";
day_names[day_names.length] = "Wednesday";
day_names[day_names.length] = "Thursday";
day_names[day_names.length] = "Friday";
day_names[day_names.length] = "Saturday";

var startU = (day_names[current_date.getDay()]) + (", ") 
  + (month_names[current_date.getMonth()]) + (" ") + current_date.getDate() 
  + (" ") + (" ") + current_date.getFullYear();

Chrome returns... Thursday, February 23 2012 etc, etc just perfectly.

• javascript
• jquery
• date
• format

Share Improve this question Follow edited Mar 7, 2012 at 4:39 kinakuta 9,03711 gold badge4040 silver badges4848 bronze badges asked Mar 7, 2012 at 4:36 CeeMoneyCeeMoney 21533 silver badges1010 bronze badges 4

• 2 what is the value for the value ing out of $(this).attr("ows_EventDate")? – Alastair Pitts Commented Mar 7, 2012 at 4:43
• This jsFiddle jsfiddle/jfriend00/rgMmH works fine for me in Chrome, Firefox and IE9. Since you haven't included the value of $(this).attr("ows_EventDate");, I had to bypass that. – jfriend00 Commented Mar 7, 2012 at 4:47
• Also, do you realize that this is a very inefficient way to declare your arrays. You can just do this; var day_names = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"]; – jfriend00 Commented Mar 7, 2012 at 4:49
• I realize that it's horribly inefficient now. Newb = me :) The value that ing in, for the February example above, would be "2012-02-04 21:00:00" – CeeMoney Commented Mar 7, 2012 at 4:54

Add a ment  | 

2 Answers 2

Sorted by: Reset to default 6

dateString must be formatted correctly. ISO 8601 date formats should work (http://www.iso/iso/date_and_time_format)

In your ment you said dateString is equal to 2012-02-04 21:00:00. Replacing the space with a T would make it a valid date format that all browsers can parse, for example:

2012-02-04T21:00:00.

Example: http://jsfiddle/TQjhP/

Your date "2012-02-04 21:00:00" is not accepted by the Date() constructor in IE.

See this related post for details: Javascript Date() constructor doesn't work.

The spec for what the Date() constructor is supposed to accept as a string is RFC2822 if you really want the details of what is legal.

Apparently, Firefox and IE work with "2012/02/04 21:00:00".

See this article for further discussion.

Lost here. The following works in Chrome wonderfully, but in IE and FireFox "undefined undefined NaN Nan" is returned

What am I missing?

var dateString = $(this).attr("ows_EventDate");
var current_date = new Date(dateString);
var month_names = [];
month_names[month_names.length] = "January";
month_names[month_names.length] = "February";
month_names[month_names.length] = "March";
month_names[month_names.length] = "April";
month_names[month_names.length] = "May";
month_names[month_names.length] = "June";
month_names[month_names.length] = "July";
month_names[month_names.length] = "August";
month_names[month_names.length] = "September";
month_names[month_names.length] = "October";
month_names[month_names.length] = "November";
month_names[month_names.length] = "December";
var day_names = [];
day_names[day_names.length] = "Sunday";
day_names[day_names.length] = "Monday";
day_names[day_names.length] = "Tuesday";
day_names[day_names.length] = "Wednesday";
day_names[day_names.length] = "Thursday";
day_names[day_names.length] = "Friday";
day_names[day_names.length] = "Saturday";

var startU = (day_names[current_date.getDay()]) + (", ") 
  + (month_names[current_date.getMonth()]) + (" ") + current_date.getDate() 
  + (" ") + (" ") + current_date.getFullYear();

Chrome returns... Thursday, February 23 2012 etc, etc just perfectly.

Lost here. The following works in Chrome wonderfully, but in IE and FireFox "undefined undefined NaN Nan" is returned

What am I missing?

var dateString = $(this).attr("ows_EventDate");
var current_date = new Date(dateString);
var month_names = [];
month_names[month_names.length] = "January";
month_names[month_names.length] = "February";
month_names[month_names.length] = "March";
month_names[month_names.length] = "April";
month_names[month_names.length] = "May";
month_names[month_names.length] = "June";
month_names[month_names.length] = "July";
month_names[month_names.length] = "August";
month_names[month_names.length] = "September";
month_names[month_names.length] = "October";
month_names[month_names.length] = "November";
month_names[month_names.length] = "December";
var day_names = [];
day_names[day_names.length] = "Sunday";
day_names[day_names.length] = "Monday";
day_names[day_names.length] = "Tuesday";
day_names[day_names.length] = "Wednesday";
day_names[day_names.length] = "Thursday";
day_names[day_names.length] = "Friday";
day_names[day_names.length] = "Saturday";

var startU = (day_names[current_date.getDay()]) + (", ") 
  + (month_names[current_date.getMonth()]) + (" ") + current_date.getDate() 
  + (" ") + (" ") + current_date.getFullYear();

Chrome returns... Thursday, February 23 2012 etc, etc just perfectly.

• javascript
• jquery
• date
• format

Share Improve this question Follow edited Mar 7, 2012 at 4:39 kinakuta 9,03711 gold badge4040 silver badges4848 bronze badges asked Mar 7, 2012 at 4:36 CeeMoneyCeeMoney 21533 silver badges1010 bronze badges 4

• 2 what is the value for the value ing out of $(this).attr("ows_EventDate")? – Alastair Pitts Commented Mar 7, 2012 at 4:43
• This jsFiddle jsfiddle/jfriend00/rgMmH works fine for me in Chrome, Firefox and IE9. Since you haven't included the value of $(this).attr("ows_EventDate");, I had to bypass that. – jfriend00 Commented Mar 7, 2012 at 4:47
• Also, do you realize that this is a very inefficient way to declare your arrays. You can just do this; var day_names = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"]; – jfriend00 Commented Mar 7, 2012 at 4:49
• I realize that it's horribly inefficient now. Newb = me :) The value that ing in, for the February example above, would be "2012-02-04 21:00:00" – CeeMoney Commented Mar 7, 2012 at 4:54

Add a ment  | 

2 Answers 2

Sorted by: Reset to default 6

dateString must be formatted correctly. ISO 8601 date formats should work (http://www.iso/iso/date_and_time_format)

In your ment you said dateString is equal to 2012-02-04 21:00:00. Replacing the space with a T would make it a valid date format that all browsers can parse, for example:

2012-02-04T21:00:00.

Example: http://jsfiddle/TQjhP/

Your date "2012-02-04 21:00:00" is not accepted by the Date() constructor in IE.

See this related post for details: Javascript Date() constructor doesn't work.

The spec for what the Date() constructor is supposed to accept as a string is RFC2822 if you really want the details of what is legal.

Apparently, Firefox and IE work with "2012/02/04 21:00:00".

See this article for further discussion.

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