/**
  * table列显示隐藏
  * @param tableId
  * @param columns table列索引 例： 0,1,2,3
  * @param type 显示隐藏列 1.显示table列 2.隐藏table列
  */
function hideShowTableTd(tableId, columns, type) {
     var strs = new Array(); //定义一数组
     strs = columns.split(","); //字符分割
     var tableTd = "";
     for (var i = 0; i < strs.length; i++) {
         tableTd += "td:eq(" + strs[i] + "),th:eq(" + strs[i] + "),"
     }
     tableTd = tableTd.substring(0, tableTd.length - 1);
     if (type == '1') {
         $('#' + tableId + ' tr').find(tableTd).show();
     }
     if (type == '2') {
         $('#' + tableId + ' tr').find(tableTd).hide();
     }
 }