javascript trying to stringify map results

example_mapStringify.js

/*
Let's say I have this html 
<table id="switchesTbl">
  <tr>
    <td><div class="addButton" type="switch"></div></td>
    <td><div class="createLabel">Switch</div></td>
    <td><input type="text" class="createInput" value="s1"/></td>
    <td><div class="createLabel">Description</div></td>
    <td><input type="text" class="createInput" value="d1"/></td>
    <td><div class="createLabel">Default</div></td>
    <td><input type="text" class="createInput" value="def1"/></td>
  </tr>
  <tr>
    <td><div class="addButton" type="switch"></div></td>
    <td><div class="createLabel">Switch</div></td>
    <td><input type="text" class="createInput" value="s2"/></td>
    <td><div class="createLabel">Description</div></td>
    <td><input type="text" class="createInput" value="d2"/></td>
    <td><div class="createLabel">Default</div></td>
    <td><input type="text" class="createInput" value="def2"/></td>
  </tr>
</table>

And my ideal output is something like this
[{switch:s1, description:d1, default:def1}, {switch:s2, description:d2, default:def2}]
*/

// if I try to map it
var switchesObj = $('#switchesTbl tr').map(function(){
  var inputs = $(this).find(':input');
  return {switch:$(inputs[0]).val(), description:$(inputs[1]).val(), default:$(inputs[2]).val()}
});

console.log(switchesObj);
// // This breaks
console.log(JSON.stringify(switchesObj));
// trying to fix stringify by not converting __proto__ to string
console.log(JSON.stringify(switchesObj, function (key, value) {
  if (typeof value == 'Object') { // key == '__proto__' also doesn't filter it out
    return '';
  }
  return value;
}));