KnockoutJS subscribe to multiple observables with same callback action

Question

I\'ve got a model class in KnockoutJS which has multiple values that I\'d like to subscribe to. Each subscription will perform the same task, like so:

funct         


        

Answer 1

Improving upon refactoring the function body into a variable, by turning the list of dependencies to track into a loop:

function CaseAssignmentZipCode(zipCode, userId, isNew) {
  var self = this;
  self.zipCode = ko.observable(zipCode);
  self.userId = ko.observable(userId);
  self.isNew = isNew;
  self.isUpdated = false;

  var handler = function () { self.isUpdated = true; };

  ko.utils.arrayForEach([self.zipCode, self.userId], function(obs) {
    obs.subscribe(handler);
  });
 }