
The video demonstrates the implementation of the Virtual DOM by building a small counter application.
1.The steps for building the counter application include:
Importing the useState hook from React, which is used to manage the state in functional components.1
Defining a functional component named "App". Functional components are a simpler way to write components compared to class components.12
Declaring a state variable, count, and a function, setCount, to update it. The useState hook initializes count to 0. count is the current state value, and setCount is used to update it.23
Starting the JSX return statement and displaying the current value of count inside a paragraph element.4
Creating an increment button where the onClick event handler calls setCount with count + 1 to increment the count state by 1 when clicked.5
Creating a decrement button where the onClick event handler calls setCount with count - 1 to decrement the count state by 1 when clicked.6
Exporting the "App" component as the default export.7
The video shows the code being run using the command npm run dev, and the counter application is then viewed in the browser. The application has two buttons, "increment" and "decrement", and clicking them increases or decreases the count.
1.The steps for building the counter application include:
Importing the useState hook from React, which is used to manage the state in functional components.1
Defining a functional component named "App". Functional components are a simpler way to write components compared to class components.12
Declaring a state variable, count, and a function, setCount, to update it. The useState hook initializes count to 0. count is the current state value, and setCount is used to update it.23
Starting the JSX return statement and displaying the current value of count inside a paragraph element.4
Creating an increment button where the onClick event handler calls setCount with count + 1 to increment the count state by 1 when clicked.5
Creating a decrement button where the onClick event handler calls setCount with count - 1 to decrement the count state by 1 when clicked.6
Exporting the "App" component as the default export.7
The video shows the code being run using the command npm run dev, and the counter application is then viewed in the browser. The application has two buttons, "increment" and "decrement", and clicking them increases or decreases the count.






