{"id":10208,"date":"2023-05-02T07:11:59","date_gmt":"2023-05-02T07:11:59","guid":{"rendered":"https:\/\/www.scmgalaxy.com\/tutorials\/?p=10208"},"modified":"2023-06-19T13:29:49","modified_gmt":"2023-06-19T13:29:49","slug":"top-50-vue-js-interview-questions-with-answers","status":"publish","type":"post","link":"https:\/\/www.scmgalaxy.com\/tutorials\/top-50-vue-js-interview-questions-with-answers\/","title":{"rendered":"Top 50 Vue.js Interview Questions with Answers"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2023\/05\/image-33.png\" alt=\"\" class=\"wp-image-10209\" width=\"652\" height=\"342\" srcset=\"https:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2023\/05\/image-33.png 600w, https:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2023\/05\/image-33-300x158.png 300w\" sizes=\"auto, (max-width: 652px) 100vw, 652px\" \/><figcaption class=\"wp-element-caption\"><strong><em>Vue.js Interview Questions with Answers<\/em><\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\">1. What is Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. A server-side scripting language<br>b. A front-end JavaScript framework<br>c. A database management system<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">2. Who developed Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. Evan You<br>b. John Resig<br>c. Douglas Crockford<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">3. What is the virtual DOM in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. A document object model that is stored in memory<br>b. A simulated version of the real DOM<br>c. An API used to manipulate the browser&#8217;s DOM<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">4. What is data binding in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. A way to connect a data source with a user interface element<br>b. A process of converting data into a different format<br>c. A function used to retrieve data from a server<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">5. What is the purpose of the v-bind directive in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To bind an attribute to an expression<br>b. To bind an event to an expression<br>c. To bind a class to an expression<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">6. What is a Vue.js component?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. A reusable UI element<br>b. A server-side script<br>c. A function used for data manipulation<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">7. What is the Vue.js instance?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. An object that contains the application data and methods<br>b. A function used to create a component<br>c. An API used to manipulate the virtual DOM<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">8. What is the Vue.js template?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. A set of instructions used to create the user interface<br>b. A function used to create a component<br>c. An object that contains the application data and methods<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">9. What is the purpose of the v-for directive in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To create a list of elements based on an array<br>b. To bind a class to an expression<br>c. To bind an attribute to an expression<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">10. What is the purpose of the v-on directive in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To bind an event to an expression<br>b. To bind a class to an expression<br>c. To bind an attribute to an expression<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">11. What is the difference between computed and watch properties in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. Computed properties are synchronous while watch properties are asynchronous<br>b. Computed properties are used to store data while watch properties are used to manipulate it<br>c. Computed properties are cached while watch properties are not<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">12. How can you pass data between components in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. Using props<br>b. Using events<br>c. Both a and b<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">13. What is Vuex in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. A state management pattern and library<br>b. A routing library<br>c. A database management system<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">14. What is the Vue.js router?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. A component used to navigate between pages<br>b. A state management pattern and library<br>c. An API used to manipulate the virtual DOM<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">15. What is the difference between props and data in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. Props store data while data retrieves it<br>b. Props are reactive while data is not<br>c. Data is passed from a parent component to a child component while props are passed from a child component to a parent component<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">16. What is the purpose of the v-model directive in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To bind a value to an input element<br>b. To bind a value to a computed property<br>c. To bind a value to a watch property<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">17. What is the Vue.js lifecycle?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. A sequence of stages that a component goes through<br>b. A set of methods used for data manipulation<br>c. An API used to manipulate the virtual DOM<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">18. What is the purpose of the created hook in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To manipulate the DOM after the component is rendered<br>b. To initialize data and events in the component<br>c. To update data in the component after it is created<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">19. What is the purpose of the mounted hook in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To manipulate the DOM after the component is rendered<br>b. To initialize data and events in the component<br>c. To update data in the component after it is created<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">20. What is the purpose of the updated hook in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To manipulate the DOM after the component is rendered<br>b. To initialize data and events in the component<br>c. To update data in the component after it is created<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">21. What is the difference between methods and computed properties in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. Methods are used to manipulate data while computed properties are used to store it<br>b. Computed properties are reactive while methods are not<br>c. Computed properties are cached while methods are not<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">22. What is the purpose of the watch hook in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To execute a function when a data property changes<br>b. To update data in the component after it is created<br>c. To initialize data and events in the component<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">23. What is the purpose of the render function in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To create a virtual DOM element<br>b. To manipulate the browser&#8217;s DOM<br>c. To convert data into a different format<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">24. What is the purpose of the slot element in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To insert content into a component from the parent component<br>b. To insert content into a component from the child component<br>c. To insert content into a component from a third-party library<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">25. What is the difference between directives and components in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. Directives are used to manipulate the DOM while components are used to create reusable UI elements<br>b. Components are used to manipulate the DOM while directives are used to create reusable UI elements<br>c. Directives and components serve the same purpose in Vue.js<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">26. What is the Vue.js mixin?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. A reusable set of options that can be merged with a component<br>b. A component used to navigate between pages<br>c. An API used to manipulate the virtual DOM<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">27. What is the purpose of the filter function in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To format data in a specific way<br>b. To connect a data source with a user interface element<br>c. To initialize data and events in the component<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">28. What is the purpose of the provide\/inject function in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To pass data between components<br>b. To format data in a specific way<br>c. To manipulate the browser&#8217;s DOM<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">29. What is the purpose of the keep-alive element in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To cache and reuse components that are frequently used<br>b. To insert content into a component from the parent component<br>c. To execute a function when a data property changes<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">30. What is the purpose of the nextTick function in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To delay the execution of a function until the next event loop<br>b. To update data in the component after it is created<br>c. To initialize data and events in the component<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">31. What is the difference between v-show and v-if in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. V-show displays an element based on a boolean value while v-if creates or destroys an element based on a boolean value<br>b. V-if displays an element based on a boolean value while v-show creates or destroys an element based on a boolean value<br>c. V-show and v-if serve the same purpose in Vue.js<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">32. What is the purpose of the async\/await syntax in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To write asynchronous code that is easier to read and maintain<br>b. To manipulate the browser&#8217;s DOM<br>c. To initialize data and events in the component<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">33. What is the purpose of the v-html directive in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To insert raw HTML into a template<br>b. To bind an attribute to an expression<br>c. To bind an event to an expression<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">34. What is the difference between the template and render functions in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. The template function generates HTML code while the render function generates a virtual DOM<br>b. The render function generates HTML code while the template function generates a virtual DOM<br>c. The template and render functions serve the same purpose in Vue.js<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">35. What is the purpose of the provide\/inject function in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To pass data between components<br>b. To format data in a specific way<br>c. To manipulate the browser&#8217;s DOM<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">36. What is the purpose of the functional component in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To create a stateless component that does not have a data model<br>b. To create a component that can be reused multiple times<br>c. To create a component that is reactive and can be used for data manipulation<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">37. What is the purpose of the transition element in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To animate the transition between two components<br>b. To insert content into a component from the parent component<br>c. To execute a function when a data property changes<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">38. What is the purpose of the renderless component in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To create a component that does not have a template<br>b. To create a stateless component that does not have a data model<br>c. To create a component that can be reused multiple times<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">39. What is the purpose of the scoped slot in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To pass data from a parent component to a child component<br>b. To provide content to a slot in a component<br>c. To insert content into a component from the parent component<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">40. What is the difference between the $emit and $on methods in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. $emit is used to emit an event while $on is used to listen to an event<br>b. $emit is used to listen to an event while $on is used to emit an event<br>c. $emit and $on serve the same purpose in Vue.js<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">41. What is the purpose of the $nextTick method in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To delay the execution of a function until the next event loop<br>b. To update data in the component after it is created<br>c. To initialize data and events in the component<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">42. What is the purpose of the v-bind directive in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To bind an attribute to an expression<br>b. To bind an event to an expression<br>c. To bind a class to an expression<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">43. What is the purpose of the v-once directive in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To render an element only once and then cache it<br>b. To bind an event to an expression<br>c. To bind an attribute to an expression<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">44. What is the purpose of the v-pre directive in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To ignore the element and all of its children during compilation<br>b. To bind an attribute to an expression<br>c. To bind an event to an expression<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">45. What is the purpose of the v-cloak directive in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To hide an element until Vue.js has finished compiling the template<br>b. To bind an attribute to an expression<br>c. To bind an event to an expression<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">46. What is the purpose of the v-if directive in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To create or destroy an element based on a boolean value<br>b. To display an element based on a boolean value<br>c. To hide an element until a specific event occurs<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">47. What is the purpose of the v-for directive in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To create a list of elements based on an array<br>b. To bind a class to an expression<br>c. To bind an attribute to an expression<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">48. What is the purpose of the v-bind directive in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To bind an attribute to an expression<br>b. To bind an event to an expression<br>c. To bind a class to an expression<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">49. What is the purpose of the v-model directive in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To bind a value to an input element<br>b. To bind a value to a computed property<br>c. To bind a value to a watch property<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">50. What is the purpose of the v-on directive in Vue.js?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a. To bind an event to an expression<br>b. To bind a class to an expression<br>c. To bind an attribute to an expression<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a<\/h4>\n","protected":false},"excerpt":{"rendered":"<p>1. What is Vue.js? a. A server-side scripting languageb. A front-end JavaScript frameworkc. A database management system Answer: b 2. [&hellip;]<\/p>\n","protected":false},"author":33,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[1],"tags":[],"class_list":["post-10208","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Top 50 Vue.js Interview Questions with Answers - scmGalaxy<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.scmgalaxy.com\/tutorials\/top-50-vue-js-interview-questions-with-answers\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Top 50 Vue.js Interview Questions with Answers - scmGalaxy\" \/>\n<meta property=\"og:description\" content=\"1. What is Vue.js? a. A server-side scripting languageb. A front-end JavaScript frameworkc. A database management system Answer: b 2. 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