What is Vue DOM Mounting?
Vue DOM mount refers to the process by which a Vue instance mounts a virtual DOM (VDOM) to an actual DOM element, making the virtual DOM take effect and display in the browser.
How to mount Vue DOM
Vue DOM mount requires the instantiation of a Vue object through new Vue()
and specify the el
option:
<code class="javascript">const app = new Vue({ el: '#app', // ... });</code>
Where, the el
option specifies the HTML element (usually using an ID selector) as the mount target of the Vue instance.
Mounting process
The process of Vue mounting a DOM includes the following steps:
- Create a virtual DOM (VDOM): Vue creates a virtual DOM based on instance data and templates.
- Comparing virtual DOM with actual DOM: Vue compares the newly created VDOM with the mounted actual DOM to determine the difference.
- Application Differences: Vue will only update the different parts of the actual DOM from the VDOM to optimize rendering performance.
- Completed Mount: When all differences are applied, the mount process is completed and the Vue instance has been successfully mounted to the target HTML element.
The function of mount
The benefits of Vue DOM mounting include:
- Data-driven rendering: After mount, Vue will automatically update the actual DOM in response to data changes.
- Efficient rendering: Vue's difference comparison algorithm only updates the necessary DOM nodes, improving rendering performance.
- Responsive UI: Vue applications can dynamically update the UI based on user interaction and data changes.
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