从Grid 获得 JSON 数据

/**
     * 从Grid 获得 JSON 数据
     *
     * @param {Object} grid
     * @param {Object} colm
     */
    function contract_htlist_GetJSON(grid, colm) {
        var rowCount = grid.getStore().getCount();
        var colCount = colm.getColumnCount();
        var JSONArray = new Array();
        for (var i = 0; i < rowCount; i++) {
            var JSONObjStr = "{";
            for (var j = 2; j < colCount; j++) { // 加了个列选择框 j=0 改成 j=2了
                // 当前列名
                var colName = grid.getColumnModel().getDataIndex(j);
                var tempObj = grid.getStore().getAt(i).get(colName);
               // tempObj = contract_htlist_dateFormatFun(tempObj);
                tempObj = (tempObj + "").replace(/(^\s*)|(\s*$)/g, ""); // 这里
                // "/g"
                // 为全局替换
                tempObj = tempObj.replace(/\\/g, '\\\\');
                tempObj = tempObj.replace(/\"/g, '\\\"');
                tempObj = tempObj.replace(/\'/g, '\\\'');
                // tempObj = tempObj.replace(/\b/g, '\\b');
                tempObj = tempObj.replace(/\r/g, '\\r');
                tempObj = tempObj.replace(/\n/g, '\\n');
                tempObj = tempObj.replace(/\t/g, '\\t');
                tempObj = tempObj.replace(/\f/g, '\\f');
                if (j == 2) {// 加了个列选择框 j=0 改成 j=2了
                    JSONObjStr += '' + colName + ':' + '"' + tempObj + '"';
                } else {
                    JSONObjStr += ',' + colName + ':' + '"' + tempObj + '"';
                }
            }
            JSONObjStr += "}";
            JSONArray.push(Ext.util.JSON.decode(JSONObjStr));
        }
        return Ext.util.JSON.encode(JSONArray);
    }