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 install jQuery using npm?

A). npm install jquery

B). npm get jquery

C). npm add jquery

D). npm download jquery

In Angular, where should you place your jQuery initialization code?

A). In the component constructor

B). In the ngOnInit lifecycle hook

C). In the ngAfterViewInit lifecycle hook

D). In the ngDoCheck lifecycle hook

Which jQuery method is used to hide an element?

A). .show()

B). .hide()

C). .toggle()

D). .fadeOut()

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

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

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

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

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

A). DefinePlugin

B). ProvidePlugin

C). EnvironmentPlugin

D). LoaderPlugin

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'