Vue.js with TypeScript Quiz

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Question 1/10

Which of the following methods ensures Vue component instance methods are bound to the correct 'this' context when using TypeScript?

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Question 2/10

How would you declare a computed property in a Vue component using TypeScript?

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Question 3/10

What is the most effective way to handle third-party libraries without type definitions in a Vue TypeScript project?

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Question 4/10

In Vue 3 with TypeScript, how do you declare a method within a component?

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Question 5/10

How do you define a data property in a Vue component using TypeScript?

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Question 6/10

When using TypeScript in a Vue 3 Composition API component, how do you explicitly type the reactive state?

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Question 7/10

When integrating Vuex with Vue and TypeScript, what is a necessary consideration to make with the store's types?

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Question 8/10

In Vue 2 with TypeScript and class-style components, which decorator is used to create a component?

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Question 9/10

Which of the following is a correct way to define a prop in a Vue component using TypeScript?

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Question 10/10

How can you type-check a Vue template expression involving a component prop in TypeScript?

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Your Answers

Question 1/10
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Which of the following methods ensures Vue component instance methods are bound to the correct 'this' context when using TypeScript?

Available answers

C is correct. When using class-style components in Vue with TypeScript, instance methods are not automatically bound to the component instance. You can explicitly bind them using Function.bind(this) to maintain the correct 'this' context.
Question 2/10
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How would you declare a computed property in a Vue component using TypeScript?

Available answers

C is correct. In Vue with TypeScript and using the class-style syntax, you define computed properties as getters within a class. The function should have the return type annotated, in this case, ': number', which is a TypeScript feature.
Question 3/10
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What is the most effective way to handle third-party libraries without type definitions in a Vue TypeScript project?

Available answers

C is correct. To use third-party libraries that do not have types, developers can create a custom declaration file, such as 
shims-vue.d.ts
, where the module is declared and given an 
any
 type until proper types can be specified or obtained.
Question 4/10
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In Vue 3 with TypeScript, how do you declare a method within a component?

Available answers

C is correct. In a class-based Vue 3 component, methods are declared as standard class methods with TypeScript type annotations for their parameters and return types.
Question 5/10
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How do you define a data property in a Vue component using TypeScript?

Available answers

D is correct. In a class-based Vue component with TypeScript, you define data properties as class properties, ensuring you specify their types (here, 'count' is a number).
Question 6/10
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When using TypeScript in a Vue 3 Composition API component, how do you explicitly type the reactive state?

Available answers

B is correct. In the Composition API when using TypeScript, the reactive function can have an explicit type parameter defined by angle brackets '<>' which specifies the shape of the state object, ensuring the properties have correct types.
Question 7/10
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When integrating Vuex with Vue and TypeScript, what is a necessary consideration to make with the store's types?

Available answers

C is correct. When integrating Vuex with Vue using TypeScript, it's crucial to define types for different aspects of the store such as state, getters, mutations, and actions, ensuring compile-time checks and enhanced IDE support.
Question 8/10
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In Vue 2 with TypeScript and class-style components, which decorator is used to create a component?

Available answers

A is correct. The @Component decorator is used to define a class as a Vue component when using the vue-class-component library with TypeScript. This decorator integrates the class with Vue’s component system.
Question 9/10
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Which of the following is a correct way to define a prop in a Vue component using TypeScript?

Available answers

B is the correct answer. When using Vue with TypeScript and the vue-class-component library, you use the decorator @Prop() to define props for a Vue component. The non-null assertion operator (!) is used to indicate that propName will definitely be provided, preventing TypeScript from throwing an error for potentially undefined values.
Question 10/10
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How can you type-check a Vue template expression involving a component prop in TypeScript?

Available answers

B is correct. When using TypeScript in Vue.js, the type-checking for expressions involving component props in the template is based on the type annotations in the component script. This processing occurs because TypeScript takes the props into account during compilation to identify any misuse.