<body> <div id="toolbar">...</div> <div id="app">...</div> <script src="node_modules/vue/dist/vue.js"></script> <script src="app.js"></script> </body>
It's important that we include the Vue library before our own custom
app.js script, as scripts run sequentially.
Here is the result:
Figure 2.3. Checking Vue is registered as a global object