Example
Find out if a datetime field must be filled out before submitting a form:
var x = document.getElementById("myDatetime").required;
The result of x will be:
true
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Definition and Usage
The required property sets or returns whether a datetime field must be filled out before submitting a form.
This property reflects the HTML required attribute.
Browser Support
| Property | |||||
|---|---|---|---|---|---|
| required | Yes | 10.0 | Yes | Yes | Yes |
Note: The <input type="datetime"> element does not show any datetime field/calendar in any major browsers, except Safari.
Syntax
Return the required property:
datetimeObject.required
Set the required property:
datetimeObject.required=true|false
Property Values
| Value | Description |
|---|---|
| true|false |
Specifies whether a datetime
field should be a required part of form submission.
|
Technical Details
| Return Value: | A Boolean, returns true if the datetime field is a required part of form submission, otherwise it returns false |
|---|
More Examples
Example
Set a datetime field to be a required part of form submission:
document.getElementById("myDatetime").required = true;
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Related Pages
HTML reference: HTML <input> required attribute
< Input Datetime Object