The Front-End Web Developer Bootcamp - HTML, CSS, JS, and React - Building a Calculator - Part 2

This video tutorial covers the implementation of a simple calculator using React hooks, specifically focusing on the useState hook. It demonstrates how to handle button clicks to update and display values, clear the display, and perform calculations. The tutorial also includes debugging and testing the functionality within a React project using JSX.

What is the initial value of the state variable 'result' in the React component?

• Undefined

• An empty string

• null

• 0

Which function is used to update the state variable when a button is clicked?

• changeResult

• setResult

• modifyResult

• updateResult

What is the purpose of the 'event.target.value' in the event handler?

• To clear the display

• To store the button's value in the state

• To reset the state variable

• To evaluate the expression

What does the 'clear display' function do in the React component?

• It initializes the state

• It evaluates the expression

• It sets the result to zero

• It concatenates the button values

How does the 'calculate' function handle errors during evaluation?

• It logs the error to the console

• It ignores the error

• It converts the error into a string

• It resets the state