How does re-rendering work in Vue.js?

How does re-rendering work in Vue.js?

In Vue.js, re-rendering occurs when the reactive data changes. Vue tracks dependencies and updates the DOM efficiently.

What triggers a re-render in a Vue component?

Re-renders are triggered by changes to reactive data properties, computed properties, or when a component's props change.

Can you explain the difference between virtual DOM and real DOM in this context?

The virtual DOM is a lightweight copy of the real DOM. Vue updates the virtual DOM first, then efficiently syncs changes to the real DOM.

How can I optimize re-rendering in my Vue application?

You can optimize re-rendering by using computed properties, watchers, and the v-once directive to avoid unnecessary updates.