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, reset, or …
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.
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 always some …
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). To group radio …
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 submit button is …
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 viewmodel ...
I have the following MVC 5 Razor HTML helper: @Html.TextBoxFor(m => m.ShortName, new { @class = "form-control", @placeholder = "short name"}) I need this field to be required (i.e. have a red …
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 boolean attributes.
Use CSS to automatically add 'required field' asterisk to form inputs
What you need is :required selector - it will select all fields with 'required' attribute (so no need to add any additional classes). Then - style inputs according to your needs.
Why were `required` and `optional` removed in Protocol Buffers 3?
I noticed that required and optional have been removed in the new syntax. Why were required / optional removed in proto3? Such keywords introduce constraints which should improve robustness.