Premium Questions for React Test
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Data binding is a technique for synchronizing data between a component and DOM. For this reason, it’s important for all web developers.
Components are used in many frameworks and languages as the building blocks of an application.
Knowing how to overcome statelessness, the intrinsic limitation of web programming, is a very important skill for a web developer.
React Hooks allow developers to use state and other React features without writing a class. Hooks allow developers to reuse stateful logic without changing the component hierarchy.
Adding or modifying content is the most common task when developing dynamic web pages.
Higher Order Components
Event-based design patterns are very common in modern applications, especially in the development of user interfaces.
Higher Order Components
A higher-order component (HOC) is an advanced technique in React for reusing component logic. HOCs are not part of the React API, they are a pattern that emerges from React’s compositional nature.
Conditional rendering is a common pattern used to show UIs based on the application’s state.
Using a React State Hook allows you to preserve state between re-renders in a manner that doesn't require render props and higher-order components patterns, which simplifies code.
Many frameworks allow developers to add their own plugins and extensions. Hooks are the points within the framework that the developer can access to implement their own logic and designs.
Using a React Effect Hook allows you to set up a subscription to DOM changes and perform side effects.
Calling methods asynchronously is a common task for programmers.
Forms provide a method of grouping inputs and collecting user data. As such, they are important for all front end developers.
Portals are a first-class way to render children into a DOM node that exists outside the DOM hierarchy of the parent component. As such, they are a very convenient tool for all developers who need to interact with a virtual DOM.
Using a React Reducer Hook allows you to pass callbacks with values between components, which simplifies code by removing the need to pass callbacks through every level of a component tree.
React Context provides a way to pass data without using props through every level of the tree.
Recommended Job Roles
These are the job roles that we recommend for the React online test.