fix attribute placeholder typo, fix label added when it should be rem…

…oved, resolves #763

index.html

@@ -25,7 +25,7 @@ <h2>Actions</h2>
       <button id="getJSON" type="button">Get JSON Data</button>
       <button id="getJS" type="button">Get JS Data</button>
       <button id="setData" type="button">Set Data</button>
-      <button id="toggleEdit" type="button">Toggle Field Edit</button> <input type="text" id="currentFieldId"/>
+      <button id="toggleEdit" type="button">Toggle Field Edit</button> <input type="text" placeholder="current field id" id="currentFieldId"/>
       <button id="addField" type="button">Add Field</button>
       <button id="removeField" type="button">Remove Field</button>
       <button id="resetDemo" type="button">Reset Demo</button>