javascript - Get an item from another array with the same index in knockout -

javascript - Get an item from another array with the same index in knockout -

the situation is: have 2 tables same amount of rows , columns (for explanation phone call them table1 , table2).

basically have show values table1 beside value same row , column in table2. eg:

table1:

1 | 2 3 | 4

table2:

5 [1: value comes same row , column table1] | 6 [2] 7 [3] | 8[4]

now, have matrix (an array, arrays) next construction in knockout:

var vm = header([{ lots: [1, 2], otherlots: [3, 4] }, { lots: [5, 6], otherlots: [7, 8] }]);

and apply model bindings see in this fiddle.

the problem, $parent.lots[$index].count doesn't homecoming expected. tried ko.computed , didn't work.

also values ko.observable when modify in table1, alter should reflected in table2

is there workaround requirement work?

it seems aren't calling underlying observables. see fork of fiddle.

http://jsfiddle.net/cellenburg/kwh2v/1/

<p data-bind="text: $parent.lots()[$index()] ? $parent.lots()[$index()].count : ('nothing show @ index ' + $index())" />

i changed previous line phone call observable $index() , lots().

hope helps.

javascript knockout.js