Validate without post with html helper Asp.net mvc

Question

How do I validate using Html helper and data Annotation, but without giving post

I mean, ex:

Stringlength(10) While he is typing, go validating this annotation...(among others)

Answer 1

Don’t forget to add to which Model to View refers: @model Dominio.Categoria

[View]
@model Dominio.Categoria

@using (Html.BeginForm())
{
    @Html.AntiForgeryToken()
    @Html.ValidationSummary(true)
    <div class="editor-label">
        @Html.LabelFor(model => model.Nome)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.Nome)<br />
        @Html.ValidationMessageFor(model => model.Nome)
    </div>
    <div>
        <button type="submit" class="btn btn-success">Salvar</button>
    </div>
}
@Scripts.Render("~/bundles/jqueryval")

In the BundleConfig you need to add the following Bundle:

bundles.Add(new ScriptBundle("~/bundles/jqueryval").Include(
       "~/Scripts/jquery.unobtrusive*",
       "~/Scripts/jquery.validate*"));