blocks|key|1144631|text|原因是getJSON调用是异步，所以您要在返回数据之前查找数据。相反，直接或间接地将使用数据的代码放在回调中。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|BOLD|entityRanges|data|1144632|例如，您可以让您的loadData调用接受回调：|1144633|var+my+=+{};

(function+()+{+
++++var+self+=+this;
++++this.sampleData+=+{+};

++++this.loadData+=+function(callback)+{
+++++++$.getJSON('http://api.flickr.com/services/feeds/photos_public.gne?jsoncallback=?',+
++++++++++{tags:+"cat",+tagmode:+"any",+format:+"json"},
++++++++++function(data){
+++++++++++++self.sampleData+=+data;
+++++++++++++callback();+//+<====+Call+the+callback
++++++++++}
+++++++);
++++};
}).apply(my);

my.loadData(function()+{+//+<===+Pass+in+a+callback
++++console.log(my.sampleData);+//+Now+the+data+is+htere
});|code-block|syntax|javascript|1144634|1144635|旁注:由于您my对象是一个单例对象，您可以适当地简化代码，不需要apply、this或self，因为您的匿名函数是定义my的上下文上的闭包：|1144636|var+my+=+{};

(function+()+{+
++++my.sampleData+=+{+};

++++my.loadData+=+function(callback)+{
+++++++$.getJSON('http://api.flickr.com/services/feeds/photos_public.gne?jsoncallback=?',+
++++++++++{tags:+"cat",+tagmode:+"any",+format:+"json"},
++++++++++function(data){
+++++++++++++my.sampleData+=+data;
+++++++++++++callback();
++++++++++}
+++++++);
++++};
})();

my.loadData(function()+{
++++console.log(my.sampleData);+//+Now+the+data+is+htere
});|1144637|当然，如果您使用的是构造函数或其他函数(您没有在引用的代码中使用，但是...)，那么您当然可能需要更复杂的结构。|1144638|entityMap^0|3|7|D|2|0|9|8|0|0|0|6|2|W|5|12|4|17|4|1N|2|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|D]]|E|@]|F|$]]|$1|G|3|H|5|6|7|11|8|@$9|12|A|13|B|C]]|E|@]|F|$]]|$1|I|3|J|5|K|7|14|8|@]|E|@]|F|$L|M]]|$1|N|3|-4|5|6|7|15|8|@]|E|@]|F|$]]|$1|O|3|P|5|6|7|16|8|@$9|17|A|18|B|C]|$9|19|A|1A|B|C]|$9|1B|A|1C|B|C]|$9|1D|A|1E|B|C]|$9|1F|A|1G|B|C]]|E|@]|F|$]]|$1|Q|3|R|5|K|7|1H|8|@]|E|@]|F|$L|M]]|$1|S|3|T|5|6|7|1I|8|@]|E|@]|F|$]]|$1|U|3|-4|5|6|7|1J|8|@]|E|@]|F|$]]]|V|$]]

The reason is that the <code>getJSON</code> call is asynchronous, so you're looking for the data before it's been returned. Instead, put your code using the data inside the callback, either directly or indirectly.

For instance, you can have your <code>loadData</code> call accept a callback:

<pre><code>var my = {};

(function () { 
 var self = this;
 this.sampleData = { };

 this.loadData = function(callback) {
 $.getJSON('http://api.flickr.com/services/feeds/photos_public.gne?jsoncallback=?', 
 {tags: "cat", tagmode: "any", format: "json"},
 function(data){
 self.sampleData = data;
 callback(); // &lt;==== Call the callback
 }
 );
 };
}).apply(my);

my.loadData(function() { // &lt;=== Pass in a callback
 console.log(my.sampleData); // Now the data is htere
});
</code></pre>

<hr>

Side note: Since your <code>my</code> object is a singleton, you can simplify that code a fair bit, no need for <code>apply</code>, <code>this</code>, or <code>self</code>, since your anonymous function is a closure over the context in which <code>my</code> is defined:

<pre><code>var my = {};

(function () { 
 my.sampleData = { };

 my.loadData = function(callback) {
 $.getJSON('http://api.flickr.com/services/feeds/photos_public.gne?jsoncallback=?', 
 {tags: "cat", tagmode: "any", format: "json"},
 function(data){
 my.sampleData = data;
 callback();
 }
 );
 };
})();

my.loadData(function() {
 console.log(my.sampleData); // Now the data is htere
});
</code></pre>

Of course, if you're using a constructor function or something instead (you weren't in your quoted code, but...), then of course you might need the more complex structure.

blocks|key|182144|text|(function+()+{+
++++++++var+self+=+this;
++++++++this.sampleData+=+{};

++++++++this.loadData+=+function()+{
+++++++++++$.getJSON('http://api.flickr.com/services/feeds/photos_public.gne?jsoncallback=?',+
++++++++++++++{tags:+"cat",+tagmode:+"any",+format:+"json"},
++++++++++++++function(data){
+++++++++++++++++self.sampleData+=+data;
+++++++++++++++++console.log(my.sampleData);+//+you+get+sample+data+after+ajax+response
++++++++++++++},
+++++++++++'json');
++++++++};
++++}).apply(my);

++++my.loadData();|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|182145|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>(function () { 
 var self = this;
 this.sampleData = {};

 this.loadData = function() {
 $.getJSON('http://api.flickr.com/services/feeds/photos_public.gne?jsoncallback=?', 
 {tags: "cat", tagmode: "any", format: "json"},
 function(data){
 self.sampleData = data;
 console.log(my.sampleData); // you get sample data after ajax response
 },
 'json');
 };
 }).apply(my);

 my.loadData();
</code></pre>

I have this code:

<pre><code>var my = {};

(function () { 
 var self = this;
 this.sampleData = { };

 this.loadData = function() {
 $.getJSON('http://api.flickr.com/services/feeds/photos_public.gne?jsoncallback=?', 
 {tags: "cat", tagmode: "any", format: "json"},
 function(data){
 self.sampleData = data;
 }
 );
 };
}).apply(my);

my.loadData();
console.log(my.sampleData); // {}
</code></pre>

The problem is my.sampleData not have anything.

Try this sample here: <a href="http://jsfiddle.net/r57ML/" rel="nofollow">http://jsfiddle.net/r57ML/</a>

Store json data in a variable inside a proxy pattern

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我有这样的代码：var my = {};(function () {     var self = this;    this.sampleData = { };    this.loadData = function() {       $.getJSON('http://api.flickr.com/service...

问将json数据存储在代理模式内的变量中
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