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