27jqGrid 3.0新特征- 数据加载完成回调

这个例子演示了jqGrid的两个新功能。

  1. loadComplete() callback -该方法是在执行加载数据后立即执行。
    这样我们就可以根据不同的需求来做不同的变化修改。

  2. 新方法 getDataIDs() -返回当前加载数据的id列表。
    这个方法可以与loadComplete回调方法组合来试用。

27jqGrid 3.0新特征- 数据加载完成回调

HTML代码举例

<html>
  <head>
    <title>jqGrid 实例</title>
  </head>
  <body>
    ···代码省略···
    <table id="list15"></table> 
    <div id="pager15"></div>
    ···代码省略···
  </body>
</html>

javascript代码举例

$(function(){
  pageInit();
});
function pageInit(){
  jQuery("#list15")
      .jqGrid(
          {
            url : ctx+'/JSONData',
            datatype : "json",
            colNames : [ 'Inv No', 'Date', 'Client', 'Amount','Tax', 'Total', 'Notes' ],
            colModel : [ 
                         {name : 'id',index : 'id',width : 55}, 
                         {name : 'invdate',  index : 'invdate',width : 90}, 
                         {name : 'name',index : 'name',width : 100}, 
                         {name : 'amount',index : 'amount',width : 80,align : "right"}, 
                         {name : 'tax',index : 'tax',width : 80,align : "right"}, 
                         {name : 'total',index : 'total',width : 80,align : "right"}, 
                         {name : 'note',index : 'note',width : 150,sortable : false} 
                       ],
            rowNum : 10,
            rowList : [ 10, 20, 30 ],
            pager : '#pager15',
            sortname : 'id',
            viewrecords : true,
            sortorder : "desc",
            loadComplete : function() {
              var ret;
              alert("这个方法是执行加载数据完成之后的回调方法。我们可以尝试在此之后更新第13行数据。");
              ret = jQuery("#list15").jqGrid('getRowData', "13");
              if (ret.id == "13") {
                jQuery("#list15")
                    .jqGrid(
                        'setRowData',
                        ret.id,
                        {
                          note : "<font color='red'>Row 13 is updated!</font>"
                        })
              }
            }
          });
  jQuery("#sids").click(function() {
    alert("Id's of Grid: \n" + jQuery("#list15").jqGrid('getDataIDs'));
  });
}	

java servlet代码举例

public class JSONData extends HttpServlet {
  private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public JSONData() {
        super();
        // TODO Auto-generated constructor stub
    }

  @Override
  protected void doGet(HttpServletRequest req, HttpServletResponse resp)
      throws ServletException, IOException {
    // TODO Auto-generated method stub
    doPost(req,resp);
  }

  /**
   * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
   */
  protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    // TODO Auto-generated method stub
    String jsondata = "{\"page\":\"1\"," +
        "      \"total\":2," +
        "      \"records\":\"13\"," +
        "      \"rows\":" +
        "          [" +
        "            {" +
        "              \"id\":\"13\"," +
        "              \"cell\":" +
        "                  [\"13\",\"2007-10-06\",\"Client 3\",\"1000.00\",\"0.00\",\"1000.00\",null]" +
        "            }," +
        "            {" +
        "              \"id\":\"12\"," +
        "              \"cell\":" +
        "                  [\"12\",\"2007-10-06\",\"Client 2\",\"700.00\",\"140.00\",\"840.00\",null]" +
        "            }," +
        "            {" +
        "              \"id\":\"11\"," +
        "              \"cell\":" +
        "                  [\"11\",\"2007-10-06\",\"Client 1\",\"600.00\",\"120.00\",\"720.00\",null]" +
        "            }," +
        "            {" +
        "              \"id\":\"10\"," +
        "              \"cell\":" +
        "                  [\"10\",\"2007-10-06\",\"Client 2\",\"100.00\",\"20.00\",\"120.00\",null]" +
        "            }," +
        "            {" +
        "              \"id\":\"9\"," +
        "              \"cell\":" +
        "                  [\"9\",\"2007-10-06\",\"Client 1\",\"200.00\",\"40.00\",\"240.00\",null]" +
        "            }," +
        "            {" +
        "              \"id\":\"8\"," +
        "              \"cell\":" +
        "                  [\"8\",\"2007-10-06\",\"Client 3\",\"200.00\",\"0.00\",\"200.00\",null]" +
        "            }," +
        "            {" +
        "              \"id\":\"7\"," +
        "              \"cell\":" +
        "                  [\"7\",\"2007-10-05\",\"Client 2\",\"120.00\",\"12.00\",\"134.00\",null]" +
        "            }," +
        "            {" +
        "              \"id\":\"6\"," +
        "              \"cell\":" +
        "                  [\"6\",\"2007-10-05\",\"Client 1\",\"50.00\",\"10.00\",\"60.00\",\"\"]" +
        "            }," +
        "            {" +
        "              \"id\":\"5\"," +
        "              \"cell\":" +
        "                  [\"5\",\"2007-10-05\",\"Client 3\",\"100.00\",\"0.00\",\"100.00\",\"no tax at all\"]" +
        "            }," +
        "            {" +
        "              \"id\":\"4\"," +
        "              \"cell\":" +
        "                  [\"4\",\"2007-10-04\",\"Client 3\",\"150.00\",\"0.00\",\"150.00\",\"no tax\"]" +
        "            }" +
        "          ]," +
        "      \"userdata\":{\"amount\":3220,\"tax\":342,\"total\":3564,\"name\":\"Totals:\"}" +
        "    }";
    response.getWriter().write(jsondata);
  }

}

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