JSON数据 - 嵌套标签

Question

这是我的JSON数据：

{
    "main_menu": [
        {
            "main_menu_id": "1212",
            "main_submenu": [
                {
                    "main_submenu_info": {
                        "main_count":2
                    },
                    "one" : "A",
                    "two" : "B"  
                },
                {
                  "one" : "A",
                  "two" : "B"
                }
            ],
            "main_r": 0.1
        }
    ],
    "main_count": 1
}

一旦我收到这些数据，我如何使用jquery到达主子菜单中的main_count：2数据？

Answer 1

var data = {
    "main_menu": [
        {
            "main_menu_id": "1212",
            "main_submenu": [
                {
                    "main_submenu_info": {
                        "main_count":2
                    },
                    "one" : "A",
                    "two" : "B"  
                },
                {
                  "one" : "A",
                  "two" : "B"
                }
            ],
            "main_r": 0.1
        }
    ],
    "main_count": 1
};

alert(data.main_menu[0].main_submenu[0].main_submenu_info.main_count);

或者通过Jquery中的ajax请求：

$.post(url, function(data){
   alert(data.main_menu[0].main_submenu[0].main_submenu_info.main_count);
});

阅读JSON和属性访问here。