Example
Find out if a file must be selected/uploaded before submitting a form:
var x = document.getElementById("myFile").required;
The result of x will be:
true
Try it Yourself »
Definition and Usage
The required property sets or returns whether a file in the file upload field must be selected/uploaded before submitting a form.
This property reflects the HTML required attribute.
Browser Support
| Property | |||||
|---|---|---|---|---|---|
| required | Yes | 10.0 | Yes | Not supported | Yes |
Syntax
Return the required property:
fileuploadObject.required
Set the required property:
fileuploadObject.required=true|false
Property Values
| Value | Description |
|---|---|
| true|false |
Specifies whether a file upload
field should be a required part of form submission.
|
Technical Details
| Return Value: | A Boolean, returns true if the file upload field is a required part of form submission, otherwise it returns false |
|---|
More Examples
Example
Set a file upload field to be a required part of form submission:
document.getElementById("myFile").required = true;
Try it Yourself »
Related Pages
HTML reference: HTML <input> required attribute
< Input FileUpload Object