Vue.js is a progressive JavaScript framework that has gained immense popularity for its simplicity and flexibility in building user interfaces. With its elegant design and ease of integration into projects, Vue.js allows developers to create interactive and dynamic web applications. Vue.js follows a component-based architecture, making it easy to develop and maintain complex applications. Whether you're building single-page applications (SPAs), progressive web apps (PWAs), or incorporating Vue.js into existing projects, it empowers you to craft responsive and feature-rich user experiences with ease and efficiency.
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Practice Test
71. What is a Vue component?
A. A reusable Vue instance
B. A single HTML element
C. A built-in Vue directive
D. A Vue data property
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Answer: A reusable Vue instance
72. How do you define a Vue component in a Vue application?
A. Using the new Component() syntax
B. Using the Vue.component() method
C. Using the createComponent() method
D. Using the defineComponent() method
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Answer: Using the defineComponent() method
73. What is the purpose of the data option in a Vue component definition?
A. To define computed properties
B. To store data properties
C. To specify component methods
D. To register the component
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Answer: To store data properties
74. How can you pass data from a parent component to a child component in Vue?
A. Using props
B. Using data
C. Using computed properties
D. Using methods
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Answer: Using props
75. What is the primary role of the props option in a Vue component?
A. To define component methods
B. To store computed properties
C. To define data properties
D. To accept data from a parent component
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Answer: To accept data from a parent component
76. How can you emit a custom event from a child component to its parent component in Vue?
A. Using the $emit() method
B. Using the v-on directive
C. Using the watch option
D. Using the data property
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Answer: Using the $emit() method
77. In a Vue component, what is the lifecycle hook that is called when the component is mounted to the DOM?
A. beforeCreate
B. created
C. beforeMount
D. mounted
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Answer: mounted
78. What is the purpose of slots in Vue components?
A. To pass data between components
B. To define computed properties
C. To provide a template for content
D. To register global components
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Answer: To provide a template for content
79. How can you create a reusable Vue component that can be used across multiple Vue applications?
A. Export the component as a JavaScript module
B. Use the globalComponent() method
C. Use the Vue.component() method
D. Use the registerComponent() method
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Answer: Export the component as a JavaScript module
80. What is the key benefit of using Vue components in a web application?
A. Improved code organization
B. Better performance
C. Smaller bundle size
D. Compatibility with older browsers
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Answer: Improved code organization
