knockout.js - pagerjs - sharing view model with enclosing pages -

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if have nested pages

<div data-bind="page: {id: 'top', withonshow: topvm}">   <div data-bind="page: {id: 'sub1', withonshow: sub1vm}">     <span data-bind="text:sub1property"></span>   </div> </div>   topvm = function(callback) { callback({topproperty: xxx}); }  sub1vm = function(callback) {     // how can access topvm here?    callback({sub1property: xxx});  }

how can access outer page's view model inner page's view model?

<span data-bind="text:$root.topvmproperty"></span>

the link here explains knockout contexts

http://knockoutjs.com/documentation/binding-context.html

according example this:

<span data-bind="text:$parent[1].topvmproperty"></span>

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