Q11. What is Vue.js?
**Vue.js** is an open-source, progressive Javascript framework for building user interfaces that aim to be incrementally adoptable. The core library of VueJS is focused o...
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Q12. What are the major features of Vue.js?
Below are the some of major features available with VueJS 1. **Virtual DOM:** It uses virtual DOM similar to other existing frameworks such as ReactJS, Ember etc. Virtual...
Q13. What are the lifecycle methods of Vue.js?
Lifecycle hooks are a window into how the library you're using works behind-the-scenes. By using these hooks, you will know when your component is created, added to the D...
Q14. What are the different API styles available?
The Vue components can be created in two different API styles 1. **Options API:** The Options API uses component logic using an object of options such as `data`, `props`,...
Q15. What are the conditional directives?
VueJS provides set of directives to show or hide elements based on conditions. The available directives are: **v-if, v-else, v-else-if and v-show** **1. v-if:** The v-if ...
Q16. What is the difference between v-show and v-if directives?
Below are some of the main differences between **v-show** and **v-if** directives, 1. v-if only renders the element to the DOM if the expression passes whereas v-show ren...
Q17. What is the purpose of v-for directive?
The built-in v-for directive allows us to loop through items in an array or object. You can iterate on each element in the array or object. 1. **Array usage:** ```javascr...
Q18. What is Vue instance?
Every Vue application works by creating a new Vue instance with the Vue function. Generally the variable vm (short for ViewModel) is used to refer Vue instance. You can c...
Q19. How do you achieve conditional group of elements?
You can achieve conditional group of elements(toggle multiple elements at a time) by applying **v-if** directive on `` element which works as invisible wrapper(no renderi...
Q20. How do you reuse elements with key attribute?
Vue always tries to render elements as efficient as possible. So it tries to reuse the elements instead of building them from scratch. But this behavior may cause problem...