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 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'

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

A). .html()

B). .text()

C). .val()

D). .append()

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 Webpack plugin is used to automatically load jQuery whenever $ or jQuery is used?

A). DefinePlugin

B). ProvidePlugin

C). EnvironmentPlugin

D). LoaderPlugin

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

A). useState

B). useEffect

C). useReducer

D). useContext

Which Vue.js lifecycle hook would you use if you need to perform actions when the component is destroyed?

A). created

B). updated

C). mounted

D). destroyed

Which jQuery method is used to hide an element?

A). .show()

B). .hide()

C). .toggle()

D). .fadeOut()

How do you include jQuery in a Webpack configuration?

A). By using the HtmlWebpackPlugin

B). By using the ProvidePlugin

C). By using the HotModuleReplacementPlugin

D). By using the CleanWebpackPlugin

How do you add jQuery to an Angular project via the angular.json file?

A). By adding it to 'styles'

B). By adding it to 'scripts'

C). By adding it to 'assets'

D). By adding it to 'dependencies'

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