
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 …
How to set HTML5 required attribute in Javascript?
edName.attributes.required = [object Attr] That's because required in that code is an attribute object, not a string; attributes is a NamedNodeMap whose values are Attr objects. To get the value of one of …
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.
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 …
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.
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.
asp.net mvc - How to add "required" attribute to mvc razor viewmodel ...
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 end and …
Argparse: Required arguments listed under "optional arguments"?
Note: Required options are generally considered bad form because users expect options to be optional, and thus they should be avoided when possible. That being said, the headers “positional arguments” …