debug EXAMPLE 7 (#511)

Author: youkinjoh

index.html

@@ -680,10 +680,10 @@ <h3>
         <pre class="example">
 &lt;!-- controller.html --&gt;
 &lt;script&gt;
-  connection.send("{string: '你好，世界!', lang: 'zh-CN'}");
-  connection.send("{string: 'こんにちは、世界!', lang: 'ja'}");
-  connection.send("{string: '안녕하세요, 세계!', lang: 'ko'}");
-  connection.send("{string: 'Hello, world!', lang: 'en-US'}");
+  connection.send('{"string": "你好，世界!", "lang": "zh-CN"}');
+  connection.send('{"string": "こんにちは、世界!", "lang": "ja"}');
+  connection.send('{"string": "안녕하세요, 세계!", "lang": "ko"}');
+  connection.send('{"string": "Hello, world!", "lang": "en-US"}');
 &lt;/script&gt;
 
 &lt;!-- presentation.html --&gt;
@@ -693,7 +693,7 @@ <h3>
     var spanElt = document.createElement("SPAN");
     spanElt.lang = messageObj.lang;
     spanElt.textContent = messageObj.string;
-    document.appendChild(spanElt);
+    document.body.appendChild(spanElt);
   };
 &lt;/script&gt;
 </pre>