$.getJSON('ko.json', function (data) {
var items = [];
$.each(data, function (key,val) {
$.each(val, function (key1, val1) {
if (key=='bt'){items.push('<option id="' + val1 + '" value="' + val1+ '">' + key1 + '</option>');}
});
});
$('<select/>', {
'class': 'my-new-list',
html: items.join("")
}).appendTo('.model');
})