Handlebars

You can create a custom string quality helper for handlebars in dotnet using the following code.

public static void Eq(EncodedTextWriter output, BlockHelperOptions options, Context context, Arguments arguments)
{
    var cmp = arguments[0] as string;
    if (arguments.Skip(1).Any(arg => (arg as string) == cmp)
    {
        options.Template(output, context);
    }
}

This helper can then be used in an .hbs document with a single or set of strings to match against as shown.

Template this if it was a match for the string.

Template this if it matched either of the strings.