Jquery: how to trigger click event on pressing enter key

I need to execute a button click event upon pressing key enter.

As it is at the moment the event is not firing.

Please Help me with the syntax if possible.

$(document).on("click", "input[name="butAssignProd"]", function () {
   //all the action
});

this is my attempt to fire click event on enter.

$("#txtSearchProdAssign").keydown(function (e) {
  if (e.keyCode == 13) {
    $('input[name = butAssignProd]').click();
  }
});