React JS Quiz April 18, 2020 Padhmanaban 1. const { blogger, programmer } = profile? Destructuring Assignment Spread Operator Array Destructuring Default Assignment 2. Which of the following are parts of "propType" validation? PropTypes.func PropTypes.undefined PropTypes.int PropTypes.array 3. In stateless functional components, are we able to specify "propTypes" & "defaultProps" as a property on the function? Yes No 4. Which of the following "Events" are dependent on the browser specification in React? Pointer Event Touch Events Wheel Events Transition Events 5. What kind of error types are not caught by Error Boundaries? Event Handler Rendering Constructor Lifecycle Methods 6. In React, what this.setState() method will return? Void Array Boolean Object 7. What are the different way to pass a props into the React.Component? defaultProps setState() propTypes Parent Component 8. Which of the tools allow you to test React Application? Jest Mocha React Testing Library Jasmine 9. What type of diffing algorithm, React using to find the difference between Actual and in-memory DOM while "state"change/update? Heuristic Simulation Optimization Memetic Evolutionary 10. Which of the following Lifecycle phase are externally controlled by ReactDOM? Mounting Updating UnMounting Catching 11. Which of the following are basic features of the react library? propTypes Validation Declarative Paradigm Virtual-DOM Server-side Rendering Time is Up! Time's up
