Input DatetimeLocal required attribute
Definition and Usage
required
Sets or returns whether the local date and time field must be filled out before submitting the form.
This property reflects the HTML required attribute.
See also:
HTML Reference Manual:HTML <input> required-Eigenschaft
Instance
Example 1
Determine whether the local date and time field must be filled out before submitting the form:
var x = document.getElementById("myLocalDate").required;
Example 2
Set the local date and time field as a required part of the form submission:
document.getElementById("myLocalDate").required = true;
Syntax
Return the required attribute:
datetimelocalObject.required
Set the required attribute:
datetimelocalObject.required = true|false
Attribute value
Value | Description |
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true|false |
Specifies whether the local date and time field should be a required part of the form submission.
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Technical details
Return value: | Boolean value, if the local date and time field is a required part of the form submission, it returns true ; sonst wird zurückgegeben false . |
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Browser-Unterstützung
Die Zahlen in der Tabelle weisen auf die erste Browser-Version hin, die das Attribut vollständig unterstützt.
Chrome | Edge | Firefox | Safari | Opera |
---|---|---|---|---|
Chrome | Edge | Firefox | Safari | Opera |
Unterstützt | 10.0 | Unterstützt | Unterstützt | Unterstützt |
Hinweis:Das Element <input type="datetime-local"> zeigt in Firefox keine任何日期时间字段/日历.