var newRow = $("<tr><tr>");
var newCell = $("<td>"+"aaaaaaaaa"+"</td>");
newRow.append(newCell);
newCell = $("<td>"+"dddddddddd"+"</td>");
newRow.append(newCell);
newCell = $("<td>"+"fffffffff"+"</td>");
newRow.append(newCell);
newCell = $("<td>"+"gggggggg"+"</td>");
newRow.append(newCell);
ls_table.append(newRow);
var newCell = $("<td>"+"aaaaaaaaa"+"</td>");
newRow.append(newCell);
newCell = $("<td>"+"dddddddddd"+"</td>");
newRow.append(newCell);
newCell = $("<td>"+"fffffffff"+"</td>");
newRow.append(newCell);
newCell = $("<td>"+"gggggggg"+"</td>");
newRow.append(newCell);
ls_table.append(newRow);
加了2个tr
应该改成
var newRow = $("<tr>");
省的append