Questions tagged as 'validaciones'

I am learning web development and I am validating my code in the NU HTML checker, but it throws me this error: Element style not allowed as child of element body in this context. (Suppressing further errors from this subtree.)...

I need to validate the numerical data entry in c ++, I am using: #include<iostream> #include<stdio.h> using namespace std; int main() { int dato; cout<<"Ingrese un valor para dato: "; while( ( cin>>dato )...

I have a form with several fields in which it must be valid NOT to enter blank spaces. If so, you should show an error message. How would spaces be controlled? For example in the name field ... I have the following code: //Función que...

I have this ViewModel: public class ActividadViewModel { [Required(ErrorMessage = "Debe ingresar el tipo de actividad")] [Display(Name = "Actividad")] public string TipoActividad { get; set; } [Required(ErrorMessage = "Debe in...

I'm doing a form in php and I need to validate that the fields are not empty. However, when writing EMPTY SPACES in the input, my function is returning a true value. Then the concrete question would be: How to validate that an input does not sta...

Good afternoon, I have a problem, I have burned all the ships and I can not get out of the mess, the issue is to change field validations in a reacive form based on the behavior of a group of fields. I am creating a recipe, it is a form with a h...