javascript - Knockout 'for' binding? -


original question

does 1 have or know of binding knockout allow behavior similar loop? can make foreach want nice if didn't have way.

edit 2

i trying create table rows based on selection user makes. in cases need x rows x length of array, other times x represents largest number rows needed display n number of arrays.

ex: image1 built based on 4 different arrays vary in size image2 built same array , doubled in case.

enter image description here enter image description here

<div data-bind="if: selectedtab()"> <table> <thead>   <tr>     <td>       <div class="a-i-post-all"></div>     </td>     <!-- ko foreach:$root.selectedtab().races-->     <td>       <input type="checkbox" />     </td>     <!-- /ko -->   </tr> </thead> <tbody data-bind="foreach: selectedtab().runners"> // <-- empty array created max number of runners in selectedtabs array of races   <tr>     <td>       <div class="a-i-post"></div>     </td>     <!-- ko foreach:$root.selectedtab().races-->     <td>       <!-- ko if: runners.length > $parentcontext.$index()-->       <input type="checkbox" />       <!-- /ko -->     </td>     <!-- /ko -->   </tr> </tbody>

the above works fine , creates want, don't having turn selectedtab.runners number empty array make loop n times create rows. open suggestions. note of time posted question have revised code considerably , down 1 occurrence related initial question.

my repeat binding this.

<tbody>   <tr data-bind="repeat: { foreach: selectedtab().runners, index: '$runner' }">     <td>       <div class="a-i-post"></div>     </td>     <td data-bind="repeat: selectedtab().races">       <!-- ko if: $item().runners.length > $runner -->       <input type="checkbox" />       <!-- /ko -->     </td>   </tr> </tbody>

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