campaigns.ejs

<% layout('../../../layout/dashboard.ejs') %>
<div data-bind="page: {id:'campaigns', role:'start',fx: 'slide', sourceOnShow: '/html/influencer/pages/campaigns/campaigns.html',beforeShow:Pages.viewCampaigns}"></div>
    <div data-bind="page: {id:'campaign',scrollToTop:true}">

    <div data-bind="page: {id:'view', fx: 'slide',  sourceOnShow: '/html/influencer/pages/campaigns/campaign.html',beforeShow:Pages.viewCampaign, scrollToTop: true, sourceCache:  true}"></div>

</div>
<div data-bind="page: {id:'account', fx: 'slide', sourceOnShow: '/html/influencer/pages/account/account.html',beforeShow:Pages.viewAccount}"></div>

<div data-bind="page: {id:'funds', fx: 'slide', sourceOnShow: '/html/advertiser/pages/funds/funds.html',beforeShow:Pages.viewFunds}"></div>
    <div data-bind="page: {id:'fund'}">
    <div data-bind="page: {id:'view',fx: 'slide', sourceOnShow: '/html/advertiser/pages/funds/view.html'}"></div>
</div>

html

<input type="text" data-bind="value: helloWorld"/>
<input type="text" data-bind="value : testValue"/>

script.js

var test = function(){
    var self = this;
    self.helloWorld = ko.observable('helloWorld');
    self.testValue = ko.computed(function(){
      return   self.helloWorld();
    },this)
    
}

var model = new test();
model.helloWorld.subscribe(function(val){
    console.log(val); 
})
ko.applyBindings(model);