引用表的顶行

This works

$(".top").click(function() {
  var thisRow = $(this).parent().parent();
  var firstRow = thisRow.parent().find("tr:first").not(thisRow);
  thisRow.insertBefore(firstRow);
});

$(".top").click(function(){
            var tr=this.parentNode.parentNode;
    tr.parentNode.insertBefore(tr.parentNode.firstChild,tr);
    tr.parentNode.removeChild(tr);   
}

$(".top").click(function(){
    var $this = $(this); // make a reference to the current element
    $.ajax({
       url: 'your/ajax/url.php',
       success: function(data) {
          // do what you want with data,
          // and then move the row on top
          // of the table, like so
          var row = $this.parents("tr");
          var first_row = row.parent().find('tr:first');
          if (row && first_row && row != first_row) {
             row.insertBefore(first_row);
          }
       }
    });
    return false; // stay on the page
});

http://api.jquery.com/jQuery.ajax/

 var row = $(this).find("tr").eq(0);