javascript JSON高级

我找不到窃听器。也许你能帮助我： 我的代码如下：

var data  = {"product":[{"config":[{"id":"1","price":"100","sku":"10548796345","manufacturer":"Apple","name":"Product 1", "description":"Web site has two parts: the Site (which is what your site visitors see) and the Administrator (which is where you will want to do a lot of the site management). You need to log in to the Administrator separately. There is a link to the administrator on the top menu that you will see when you log .","cid":"1","qty":"102"}],"options":[{"color":[{"blue":"+10","count":"2"},{"red":"+20","count":"3"}]},{"size" :[{"S":"+10","count":"1"},{"M":"+20","count":"4"},{"L":"+30","count":"5"},{"XL":"+40","count":"2"}]}]},{"config":[{"id":"2","price":"100","sku":"10548796341","manufacturer":"Apple","name":"Product 2", "description":"Web site has two parts: the Site (which is what your site visitors see) and the Administrator (which is where you will want to do a lot of the site management). You need to log in to the Administrator separately. There is a link to the administrator on the top menu that you will see when you log in.","cid":"1","qty":"102"
}],"options":[{"color":[{"blue":"+10","count":"2"},{"red":"+20","count":"3"}]},{"size" :[{"S":"+10","count":"1"},{"M":"+20","count":"4"},{"L":"+30","count":"5"},{"XL":"+40","count":"2"}]}]}],"categories":[ {"id":1,"name":"Category 1", "description":"Category 1 description"}, {"id":2,"name":"Category 2", "description":"Category 2 description"}, {"id":3,"name":"Category 3", "description":"Category 3 description"}]};

for (var i=0;i<data.product.length;i++) {

                data.product[i].config.each(function(p){     

                     var el = new Element('div.preview'),
                         name = new Element('h3', {'html': '<a href="#!product/product?product_id='+parseInt(p.id)+'">' + p.name + '</a>'}).inject(el);
                         el.inject(container);  

                 });
          }

将此代码复制并粘贴到：

下面的代码是工作

  data.categories.each(function(c){
      var opt = new Option(c.name, c.id);               
      try {category_selector.add(opt, null)} catch (err) {category_selector.add(opt)}                          
    });

为什么此代码与上面的代码不同（返回未定义）：

data.product.each（函数p）{
var el=新元素（'div.preview'），
name=新元素（'h3'，{'html'：''''}）.inject（el），
desc=新元素（'span'，{'html'：p.config.description}）.inject（名称'after'）；
el.注射（容器）；
});

附言

如果我将代码编辑为：

data.product.each(function(p, i){



                     var el = new Element('div.preview'),
                         name = new Element('h3', {'html': '<a href="#!product/product?product_id='+parseInt(p.config[i].id)+'">' + p.config[i].name + '</a>'}).inject(el);                         
                         el.inject(container);  

         });

data.product.each（函数（p，i）{
var el=新元素（'div.preview'），
name=新元素（'h3'，{'html'：''''}）；
el.注射（容器）；
});

它将只返回1个产品和控制台错误：p.config[i]未定义

第2页：

 data.obj[1].config.each(function(p){ 
// [1] - return first product; [2] - return second; How to return all 1 and 2?   

         var el = new Element('div.preview'),
         name = new Element('h3', {'html': '<a href="#!product/product?product_id='+parseInt(p.id)+'">' + p.name + '</a>'}).inject(el);

         el.inject(container);  

             });

data.obj[1].config.each（函数（p）{
//[1]-返回第一个产品；[2]-返回第二个产品；如何返回所有1和2？
var el=新元素（'div.preview'），
name=新元素（'h3'，{'html'：''''}）；
el.注射（容器）；
});

data.product。每个

将运行回调2次（因为里面有2个对象）。第一次，p将是config对象。第二次，它将是options对象

您正在执行类似于

p.config.id

的操作，当p是“选项”时，这没有意义。 似乎您根本不需要使用每个迭代器？

---

只需在开始时使用

var p=data.product

，并删除每次迭代的

。
data.product。每个
都将运行回调2次（因为内部有2个对象）。第一次，p将是config对象。第二次，它将是options对象

您正在执行类似于
p.config.id
的操作，当p是“选项”时，这没有意义。
似乎您根本不需要使用每个迭代器？
只需在开始时使用
var p=data.product
，并删除每次迭代的
。
工作代码如下：

var data  = {"product":[{"config":[{"id":"1","price":"100","sku":"10548796345","manufacturer":"Apple","name":"Product 1", "description":"Web site has two parts: the Site (which is what your site visitors see) and the Administrator (which is where you will want to do a lot of the site management). You need to log in to the Administrator separately. There is a link to the administrator on the top menu that you will see when you log .","cid":"1","qty":"102"}],"options":[{"color":[{"blue":"+10","count":"2"},{"red":"+20","count":"3"}]},{"size" :[{"S":"+10","count":"1"},{"M":"+20","count":"4"},{"L":"+30","count":"5"},{"XL":"+40","count":"2"}]}]},{"config":[{"id":"2","price":"100","sku":"10548796341","manufacturer":"Apple","name":"Product 2", "description":"Web site has two parts: the Site (which is what your site visitors see) and the Administrator (which is where you will want to do a lot of the site management). You need to log in to the Administrator separately. There is a link to the administrator on the top menu that you will see when you log in.","cid":"1","qty":"102"
}],"options":[{"color":[{"blue":"+10","count":"2"},{"red":"+20","count":"3"}]},{"size" :[{"S":"+10","count":"1"},{"M":"+20","count":"4"},{"L":"+30","count":"5"},{"XL":"+40","count":"2"}]}]}],"categories":[ {"id":1,"name":"Category 1", "description":"Category 1 description"}, {"id":2,"name":"Category 2", "description":"Category 2 description"}, {"id":3,"name":"Category 3", "description":"Category 3 description"}]};

for (var i=0;i<data.product.length;i++) {

                data.product[i].config.each(function(p){     

                     var el = new Element('div.preview'),
                         name = new Element('h3', {'html': '<a href="#!product/product?product_id='+parseInt(p.id)+'">' + p.name + '</a>'}).inject(el);
                         el.inject(container);  

                 });
          }

for（var i=0；i工作代码如下：

var data  = {"product":[{"config":[{"id":"1","price":"100","sku":"10548796345","manufacturer":"Apple","name":"Product 1", "description":"Web site has two parts: the Site (which is what your site visitors see) and the Administrator (which is where you will want to do a lot of the site management). You need to log in to the Administrator separately. There is a link to the administrator on the top menu that you will see when you log .","cid":"1","qty":"102"}],"options":[{"color":[{"blue":"+10","count":"2"},{"red":"+20","count":"3"}]},{"size" :[{"S":"+10","count":"1"},{"M":"+20","count":"4"},{"L":"+30","count":"5"},{"XL":"+40","count":"2"}]}]},{"config":[{"id":"2","price":"100","sku":"10548796341","manufacturer":"Apple","name":"Product 2", "description":"Web site has two parts: the Site (which is what your site visitors see) and the Administrator (which is where you will want to do a lot of the site management). You need to log in to the Administrator separately. There is a link to the administrator on the top menu that you will see when you log in.","cid":"1","qty":"102"
}],"options":[{"color":[{"blue":"+10","count":"2"},{"red":"+20","count":"3"}]},{"size" :[{"S":"+10","count":"1"},{"M":"+20","count":"4"},{"L":"+30","count":"5"},{"XL":"+40","count":"2"}]}]}],"categories":[ {"id":1,"name":"Category 1", "description":"Category 1 description"}, {"id":2,"name":"Category 2", "description":"Category 2 description"}, {"id":3,"name":"Category 3", "description":"Category 3 description"}]};

for (var i=0;i<data.product.length;i++) {

                data.product[i].config.each(function(p){     

                     var el = new Element('div.preview'),
                         name = new Element('h3', {'html': '<a href="#!product/product?product_id='+parseInt(p.id)+'">' + p.name + '</a>'}).inject(el);
                         el.inject(container);  

                 });
          }

for（var i=0；它不是JSON，这是一个对象初始值设定项，哪里有问题？我看不到任何函数返回任何内容。您是否添加了控制台行并查看发生了什么情况？当您发现自己在写“…无法工作…”在一个技术问题中，将其退格，准确地说出您预期会发生什么，确切地说正在发生什么，为什么您认为这是错误的，并引用任何可用的错误报告的输出（例如，所有主要浏览器现在都有一个错误控制台）。这不是JSON，这是一个对象初始值设定项，哪里有问题？我看不到任何函数返回任何内容。是否添加了控制台行并查看发生了什么？任何时候您发现自己在写“…无法工作…”在一个技术问题中，将其退格，准确地说出您预期会发生什么，确切地说正在发生什么，为什么您认为这是错误的，并引用任何可用的错误报告的输出（例如，所有主要浏览器现在都有一个错误控制台）。如果我有很多产品，我如何删除它们？我第一次误读了你的数据，很抱歉。你的每个都很好。但是你似乎希望它返回一些东西。但是Array.forEach（Javascript）和Array.each（mootools）不返回任何内容，因此您通常会看到未定义的结果。如果我有很多产品，我如何删除它们？对不起，我第一次误读了您的数据。您的每个都很好。但是您似乎希望它返回一些内容。但是Array.forEach（Javascript）和Array.each（mootools）是不返回任何内容，因此结果显示未定义是正常的。由于config是一个数组，但有1项，因此可以这样做：由于config是一个数组，但有1项，因此可以这样做：