Input Datetime max Property

Input Datetime Object Reference Input Datetime Object


Get the maximum date and time allowed for a datetime field:

var x = document.getElementById("myDatetime").max;

The result of x will be:

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Definition and Usage

The max property sets or returns the value of the max attribute of a datetime field.

The max attribute specifies the maximum value (date and time) for a datetime field.

Tip: Use the max attribute together with the min attribute to create a range of legal values.

Tip: To set or return the value of the min attribute, use the min property.

Browser Support

Internet Explorer Firefox Opera Google Chrome Safari

The max property is supported in all major browsers.

Note: The max property is not supported in Internet Explorer 9 and earlier versions.

Note: The <input type="datetime"> element is not supported in Internet Explorer, Firefox, Opera version 15 (and newer) or Chrome.


Return the max property:


Set the max property:


Property Values

Value Description
YYYY-MM-DDThh:mm:ssTZD Specifies the maximum date and/or time allowed for the datetime field.

Explanation of components:
  • YYYY - year (e.g. 2011)
  • MM - month (e.g. 01 for January)
  • DD - day of the month (e.g. 08)
  • T - a required separator if time is also specified
  • hh - hour (e.g. 22 for 10.00pm)
  • mm - minutes (e.g. 55)
  • ss - seconds (e.g. 03)
  • TZD - Time Zone Designator (Z denotes Zulu, also known as Greenwich Mean Time)

Technical Details

Return Value: A String, representing the maximum date and time allowed

More Examples


Change the maximum date and time:

document.getElementById("myDatetime").max = "2012-01-01T11:57Z";
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Related Pages

HTML reference: HTML <input> max attribute

Input Datetime Object Reference Input Datetime Object