Q
In React, how do you ensure jQuery code runs only once after the component mounts?

Answer & Solution

Answer: Option B
Solution:
Use useEffect with an empty dependency array to ensure the jQuery code runs only once after the component mounts.
Related Questions on Average

How do you make sure that jQuery is available globally in a Webpack project?

A). By adding it to the entry point

B). By configuring the ProvidePlugin

C). By adding it to the output

D). By adding it to the module.rules

What command is used to install jQuery via yarn?

A). yarn add jquery

B). yarn get jquery

C). yarn install jquery

D). yarn download jquery

How do you declare jQuery globally in a Vue component?

A). import jQuery from 'jquery'

B). const jQuery = require('jquery')

C). declare var $: any;

D). import $ from 'jquery'

What is a common use case for integrating jQuery with React?

A). To manage state

B). To perform complex calculations

C). To use jQuery plugins

D). To handle API requests

Which React hook is typically used to run jQuery code after a component mounts?

A). useState

B). useEffect

C). useReducer

D). useContext

In Vue.js, which lifecycle hook should you use to run jQuery code after the component mounts?

A). created

B). updated

C). mounted

D). destroyed

Which method in jQuery is used to change the text content of a selected element?

A). .html()

B). .text()

C). .val()

D). .append()

Which jQuery method is used to hide an element?

A). .show()

B). .hide()

C). .toggle()

D). .fadeOut()

Which command correctly installs both jQuery and the types for jQuery in a TypeScript project?

A). npm install jquery @types/jquery

B). npm install jquery jquery-types

C). npm add jquery @types/jquery

D). npm install jquery types

How can you optimize the performance of a jQuery-heavy application in a modern framework?

A). Minimize jQuery usage

B). Use jQuery for everything

C). Avoid using native methods

D). Use multiple jQuery plugins