//添加选择项
function AddOption(msg, combox) {
    var categoryObj = eval(msg);
    
    for(var i=0, len = categoryObj.length; i < len; i++) {
        combox.append("<option value='"+ categoryObj[i].CategoryID +"'>第"+categoryObj[i].CategoryID+"类 " + categoryObj[i].CategoryName + "</option>");
    }
}

//加载类别数据
function LoadCategoryData(url, categoryCombox, callback) {
    $.ajax({
        type: "GET",
        url: url,
        data: "Action=GetAllCategory",
        success: function(msg) {
            AddOption(msg, categoryCombox);
            
            if(callback && typeof callback == 'function') {
                callback();
            }
        }
    });
}