json集合取值

   var josnStr = {
            "total": 28, "rows": [
        { "productid": "FI-SW-01", "productname": "Koi", "unitcost": 10.00, "status": "P", "listprice": 36.50, "attr1": "Large", "itemid": "EST-1" },
        { "productid": "K9-DL-01", "productname": "Dalmation", "unitcost": 12.00, "status": "P", "listprice": 18.50, "attr1": "Spotted Adult Female", "itemid": "EST-10" }
            ]
        }
        var html = "";

        $.each(josnStr.rows, function (i, item) {
            html += "<div class='easyui-panel' title='My Panel' style='500px;height:150px;padding:10px;background:#fafafa;'>"
            html += "<p>" + item.productid + "</p>";
            html += "</div>"
        });
        $("body").empty().append(html);