How to use ko.validation.group function

Question

I am trying to use knockout.validation plugin. I created an exampleViewModel :

function exampleViewModel() {
   this.P1 = ko.observable().extend({ required :         


        

Answer 1

As described in the documentation the right way to validate only specific observables is:

this.errors = ko.validation.group([this.P1, this.P2, this.P3]);