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Vue.js Interview Questions and Answers

Test your skills through the online practice test: Vue.js Quiz Online Practice Test

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Ques 11. What are dynamic components in Vue.js?

Dynamic components in Vue.js are components whose type is determined at runtime. They are created using the element and can be switched or replaced dynamically based on a variable or expression.

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Ques 12. Explain the virtual DOM in Vue.js.

The virtual DOM in Vue.js is an in-memory representation of the real DOM elements. It is used to optimize rendering by minimizing the number of manipulations needed on the actual DOM, improving performance in complex applications.

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Ques 13. How does Vue.js handle components communication?

Vue.js supports various ways of components communication, including props for parent-to-child communication, custom events for child-to-parent communication, and a centralized state management system like Vuex for communication between distant components.

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Ques 14. Explain Vue.js transition system.

Vue.js provides a transition system that allows you to apply transition effects to elements when they enter or leave the DOM. It involves transition classes, CSS animations, and JavaScript hooks for fine-grained control over the transition process.

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Ques 15. What is the purpose of the keep-alive tag in Vue.js?

The tag in Vue.js is used to cache and preserve the state of components. It prevents the destruction of components when they are toggled, allowing them to retain their state and avoid re-rendering.

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