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 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

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

Which jQuery method is used to hide an element?

A). .show()

B). .hide()

C). .toggle()

D). .fadeOut()

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

A). DefinePlugin

B). ProvidePlugin

C). EnvironmentPlugin

D). LoaderPlugin

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

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

What Angular lifecycle hook should you use to run jQuery code after the components view has initialized?

A). ngOnInit

B). ngAfterViewInit

C). ngAfterContentInit

D). ngDoCheck

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'

What is the primary reason for using jQuery in modern frameworks?

A). To replace the framework's functionality

B). To enhance and simplify specific tasks

C). To make code more complex

D). To avoid using native JavaScript

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