api_key_weather_app

ReactJS is one of the most well-known JavaScript frameworks. It was created by Facebook (now Meta). Being component-based and drawing on the most recent theories behind design systems, it allows you to design frontend software quickly and create dynamic user interfaces.

This course takes a project-oriented approach. You’ll start by building a “My To-do List” application, using localStorage, useEffect, and useState hooks, as well as setTimeout and nanoid. Then, you will build a “Quiz” application while learning to use the confetti package and ternary operator. Next, you’ll cover fetch API and build the “Pretty Sunny” project. Next, you’ll create the “Asia Explorer” memory game, creating catchy effects by dynamically adding class names. Then, you will implement a “Personal Portfolio” application. Finally, you will create a “GitHub Readme” profile to help you showcase your projects on GitHub.

Ultimately, you’ll be able to highlight your achievements on your resume, thus boosting your chances of landing a job.

Creating Five Impactful Applications with ReactJS

## The `onChangeHandler` method

We’ll now import the `useState` hook, which allows us to track the state in the component.

> **Note:** To learn more about useState, read the Educative Answer post on  [useState](https://www.educative.io/edpresso/react-hooks-introduction---usestate).


The `useState` hook takes inputData to store the input’s state value and uses the `setInputData` function to update the state. We’ll pass this `inputData` as a value to our input element. Initially, `inputData` is an empty string. The following code provides an example of this:



# The `onChangeHandler` method

We’ll now import the `useState` hook, which allows us to track the state in the component.

> **Note:** To learn more about useState, read the Educative Answer post on  [useState](https://www.educative.io/edpresso/react-hooks-introduction---usestate).


The `useState` hook takes inputData to store the input’s state value and uses the `setInputData` function to update the state. We’ll pass this `inputData` as a value to our input element. Initially, `inputData` is an empty string. The following code provides an example of this:



Learn how to use events and event handler.

Course Overview

My Todo List

React Fundamental Assessment

JavaScript Quiz

React Beginner Assessment

Pretty Sunny

React Intermediate Assessment

Asia Explorer

Advance Level React Assessment

Personal Portfolio

React Final Assessment

GitHub Readme Profile

Conclusion

Input Component Functions

The `onChangeHandler` method