Q1. How does reactivity work in Vue 3 with Proxy?
Vue 3 wraps reactive objects in an ES Proxy that intercepts get and set operations. On a get, track() records the currently active effect (a render function, computed or ...
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Q2. What is the difference between the Options API and the Composition API in Vue 3?
The Options API organises component logic into fixed options such as data, methods, computed, watch and lifecycle hooks. The Composition API organises the same logic insi...
Q3. Explain the difference between computed, watch and watchEffect.
computed derives a cached value from reactive dependencies. The getter re-evaluates only when a dependency changes and something reads the value, which makes it ideal for...
Q4. What is the difference between ref and reactive, and what are the pitfalls?
ref creates a reactive reference that can hold any value, including primitives, and is accessed through .value in JavaScript while auto-unwrapping in templates. reactive ...
Q5. How to use composition API in Vue2.0?
Vue 2.0 does not have native support for the Composition API, but you can use it via the official plugin: `@vue/composition-api`. Let's see the usage in step-by-step inst...
Q6. What is composition API?
The **Composition API** in Vue 3 is a new way to organize and reuse logic in Vue components. It was introduced to address some limitations of the **Options API** (used in...
Q7. What are the benefits of composition API?
The composition API provides several benefits over the traditional Options API as listed below. 1. Better logic reuse and code organization: 2. Better typescript support:...
Q8. What are composition functions?
**Composition functions** (commonly called **Vue Composables**) are functions that leverage Vue's Composition API to encapsulate, manage, and reuse **stateful logic** acr...
Q9. What are the lifecycle hooks in the Vue 3 Composition API and how are they used?
In **Composition API**, lifecycle hooks are functions you call **inside the `setup()` function** to hook into different stages of a component's lifecycle. These hooks rep...