Top "Required" questions

Required is an HTML attribute of an input element that forces that the input be supplied.

How to use the "required" attribute with a "radio" input field

I am just wondering how to use the new HTML5 input attribute "required" in the right way on radio buttons. …

html radio-button required
Can I apply the required attribute to <select> fields in HTML5?

How can I check if a user has selected something from a <select> field in HTML5? I see &…

javascript html select required
lvalue required as left operand of assignment error when using C++

int main() { int x[3]={4,5,6}; int *p=x; p +1=p;/*compiler shows error saying lvalue required as left operand of assignment*/ …

c++ pointers required lvalue
Is the 'as' keyword required in Oracle to define an alias?

Is the 'AS' keyword required in Oracle to define an alias name for a column in a SELECT statement? I …

sql oracle alias required
HTML5 required attribute seems not working

I can't figure out why the new required attribute of HTML5 seems to not be working, and I know my …

html required
What is the difference between required and ng-required?

What is the difference between required and ng-required (form validation)?

angularjs required
Explain why constructor inject is better than other options

In a Pro Spring 3 Book, Chapter 4 - Introduction IOC and DI in Spring - Page 59, In "Setter Injection vs. Constructor …

java spring dependency-injection required
Angular is automatically adding 'ng-invalid' class on 'required' fields

I am building an angular app for which I have some forms set up. I have some fields that are …

javascript forms angularjs required
Firefox 4 : Is there a way to remove the red border in a required form input?

When required is defined in a form field, Firefox 4 automatically shows a red border to this element, even BEFORE the …

attributes border firefox4 required
Conditionally required property using data annotations

I have a class like this: public class Document { public int DocumentType{get;set;} [Required] public string Name{get;set;} […

c# data-annotations requiredfieldvalidator required