testcase.js

<input name="attr_repeating_test_0_field" type="text" />
<fieldset class="repeating_inventory">
    <table>            
        <tr border="1">    
            <td><input type="text" style="width:50px" name="attr_weight" value="0" title="item's weight" /></td>
        </tr>
    </table>
</fieldset>

<script type="text/worker">
console.log('=====> Testing setAttrs() with repeating fields by ID <=====');
on('change:repeating_inventory', function(){
    console.log('===> Got change Event on repeating_inventory <===');
    getSectionIDs('repeating_inventory',function(ids){
        if(ids.length) {
            var o={};
            console.log('===> Attempting change on weight for id '+ids[0]+' <===');
            o['repeating_inventory_'+ids[0]+'_weight']='taco';
            setAttrs(o);
        }
    });
});

//on("change:repeating_inventory:weight", function() {
//    setAttrs({
//        repeating_inventory_weight: "howdy"
//    });
//});

on("change:repeating_test:field", function() {
//   setAttrs({
//      repeating_test_0_field: "hellothar"
//   });
   
   var newrowid = generateRowID();
   
   var newrowattrs = {};
   
   newrowattrs["repeating_inventory_" + newrowid + "_weight"] = "testnewrow";
   
   setAttrs(newrowattrs);
});

console.log(_.sortBy);
</script>