ADD: added function for the dynamic creation of entities

webapp/src/components/control/controls.jsx

@@ -1,12 +1,31 @@
 import React from 'react';
 import './controls.css'
+import { sendMsg } from '../api';
 
 class Controls extends React.Component
 {
+  constructor(props) {
+    super(props);
+    this.ws = props.ws;
+
+    // This binding is necessary to make `this` work in the callback
+  }
+  getMessage()
+  {
+    var msg = 
+    {
+      Type: "Request",
+      Data: "COP"
+
+    }
+    sendMsg(JSON.stringify(msg));
+    console.log("test");
+
+  }
     render() {
         return (
           <div className="controls">
-            My Application!
+            <button onClick={this.getMessage}> click me!</button>
           </div>
         );
       }