html - required or required = "required" - Stack Overflow
Sep 24, 2013 · Required This attribute specifies that the user must fill in a value before submitting a form. It cannot be used when the type attribute is hidden, image, or a button type (submit, …
Validation | required="true" / "false" | HTML form - Stack Overflow
Explains how to use the "required" attribute in HTML forms for input validation, including examples and best practices.
How to use the "required" attribute with a "radio" input field
1023 TL;DR: Set the required attribute for at least one input of the radio group. Setting required for all inputs is more clear, but not necessary (unless dynamically generating radio-buttons). …
validation - How to Indicate Required Fields? - Stack Overflow
Source: Form fields — Required vs Optional by Jordane Sanson Why use optional fields is always better than required : An asterisk is obvious to you, not to everyone, believe me, there are …
Using the HTML5 "required" attribute for a group of checkboxes?
Jun 3, 2011 · When using the newer browsers that support HTML5 (FireFox 4 for example); and a form field has the attribute required='required'; and the form field is empty/blank; and the …
How do I make a field required in HTML? - Stack Overflow
Find out how to make a field required in HTML forms using the "required" attribute and ensure proper validation for user inputs.
asp.net mvc - How to add "required" attribute to mvc razor …
new { @class = "form-control", placeholder = "short name", required="required"}) or you can use the RequiredAttribute class in .Net. With jQuery the RequiredAttribute can Validate on the front …
html - Required attribute HTML5 - Stack Overflow
As ms2ger has pointed out, the required attribute is a boolean attribute, and here's what the HTML 5 spec has to say about those: Note: The values "true" and "false" are not allowed on …
What does it mean for a property to be [Required] and nullable?
Required is a data annotation for the view. The view will require it to have a value prior to accepting a form post. That the value is nullable is related to what is allowed in the database. …
python - Missing 1 required positional argument - Stack Overflow
Missing 1 required positional argument [duplicate] Asked 11 years, 4 months ago Modified 2 years, 3 months ago Viewed 264k times