How to use template tag with Vue root instance

I am enhancing a page in a web application using Vue. In the past I have written single file components and I've found it convenient to define the html template at the top of the file using a <template> tag.

Is there a way to use this tag when defining a Vue root instance? Or do I need to put a string in the template property of the Vue options object?

Solution

You can use the x-template syntax, like so

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
  <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>
<body>
  
  <script type="text/x-template" id="message-template">
        <div >
           {{message}}
        </div>
    </script>
  
  <div id="app"> </div>
  
 <script>
     var graphapp = new Vue({
            el: "#app",            
            data: {
                message: "hi there"
            },
            template: "#message-template"
     });   
  </script>
   
</body>
</html>

worth noting, if your editor doesn't understand html inside the x-template block you can use text/html also.

You can also define a number of components in the page also. This is super useful when you are upgrading a page from plain html/js but can't fully change it over

Refer to: https://v2.vuejs.org/v2/guide/components-edge-cases.html#X-Templates