What is the process for implementing a dynamically generated template in a Vue.js instance?

Using a static template with a Vue.js instance is straightforward. The firstPlaceholder content gets replaced by the staticTemplate, and the text property renders correctly.

However, creating a dynamic template poses rendering issues. The secondPlaceholder is missing, potentially due to timing problems.

How can I adjust my code to ensure the correct rendering of the secondPlaceholder using the dynamicTemplate?

<!doctype html>
<html>

<head>
   <script src="https://cdn.jsdelivr.net/npm/vue"></script>
</head>

<body>
  
    <template id = "staticTemplate">
      <div>{{text}}</div>
    </template> 
      
    <div id ="firstPlaceholder"></div>
  
    <div id ="secondPlaceholder"></div>      

<script>
    
    var dynamicTemplate = document.createElement('template');
      dynamicTemplate.id = 'dynamicTemplate';
      var div = document.createElement('div');
      div.innerText = '{{text}}';
      dynamicTemplate.appendChild(div);
      
      var staticTemplate = document.getElementById('staticTemplate');
      document.body.insertBefore(dynamicTemplate, staticTemplate);
    
      new Vue({
        el: '#firstPlaceholder',
        template: '#staticTemplate',
        data: {
          text: 'My first text'
        }
      }); 
      
      new Vue({
        el: '#secondPlaceholder',
        template: '#dynamicTemplate',
        data: {
          text: 'My second text'
        }
      });       
     
</script>
</body>
</html>

For more information, see:

How to target custom element (native web component) in vue.js?

Answer №1

Take a look at the DOM template documentation,

The HTML Content Template () element serves as a container for client-side content that isn't rendered on page load but can be created during runtime using JavaScript.

<template> has a content attribute, typically used to access template content. Ensure your HTML is added within this content.

If you directly use appendChild on <template>, you won't see any content displayed.

To fix this issue: replace

dynamicTemplate.appendChild(childDiv)
with
dynamicTemplate.content.appendChild(childDiv)

In cases where certain browsers do not support <template>, consider using <div> and hide it instead.

Note: Some sources suggest that the attribute=content of <template> is read-only in HTMLTemplateElement, so using div instead of template may be a better option.

Additionally, you might explore Vue's render() method as a more suitable solution.

Answer №2

Your specific example may not be able to utilize it as presented, but you might achieve the desired outcome with the help of Async Components.

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