Question

I have this page which has several TextAreas (asp.net mvc).
I need to validate that at least one of those fields has text in it.
How can I do that with jQuery?

<%= Html.TextArea("taMetodologia",Model.Enmienda.Detalles.EnmiendaMetodologia, 8, 70,new {@class = "Especificaciones"}) %>

That’s an example of the textAreas I have.

Answer 1

Assuming you are not using the validate plugin and all the textareas have the “Especificaciones” class, you could use a filter on the class.

If the length of the following is greater than 0, then at least one of the textareas had a value in it.

$(".Especificaciones").filter(function(){
    return $(this).val() != "";
}).length;