Example
Find out if a number field must be filled out before submitting a form:
var x = document.getElementById("myNumber").required;
The result of x will be:
true
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Definition and Usage
The required property sets or returns whether a number field must be filled out before submitting a form.
This property reflects the HTML required attribute.
Browser Support
The required property is supported in all major browsers, except Internet Explorer 9 and earlier versions, and Safari.
Syntax
Return the required property:
numberObject.required
Set the required property:
numberObject.required=true|false
Property Values
| Value | Description |
|---|---|
| true|false |
Specifies whether a number field should be a required part of form submission.
|
Technical Details
| Return Value: | A Boolean, returns true if the number field is a required part of form submission, otherwise it returns false |
|---|
More Examples
Example
Set a number field to be a required part of form submission:
document.getElementById("myNumber").required = true;
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Related Pages
HTML reference: HTML <input> required attribute
< Input Number Object