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What is the second argument for setState useful for?

Correct Answer : A

Props are __________ into other components

Correct Answer : A

What is Babel?

Correct Answer : D

Which of the following called fat arrow function in react?

Correct Answer : D

In which directory React Components are saved?

Correct Answer : A

What is a controlled input element?

Correct Answer : B

What are the two ways that data gets handled in React?

Correct Answer : A

Which of the following method define default values for properties using props?

Correct Answer : D

What create-react-app command do

Correct Answer : B

How do you write an inline style specifying the font-size:12px and color:red; in JSX

Correct Answer : B

Which helps react for keeping their data unidirectional?

Correct Answer : A

What is state in React?

Correct Answer : B

Which of the following represented the Pre and post life cycle methods of components ?

Correct Answer : D

When it is recommended to pass this.setState as a function instead of an object?

Correct Answer : B

Everything in React is a _____________

Correct Answer : B

What does the "webpack" command do?

Correct Answer : C

Keys are given to a list of elements in react. These keys should be - 

Correct Answer : C

React.js covers only the view layer of the app.

Correct Answer : A

In React what is used to pass data to a component from outside?

Correct Answer : C

How do you access a function fetch() from a h1 element in JSX?

Correct Answer : A

React JS uses _____ to increase performance

Correct Answer : B

What is ReactJS?

Correct Answer : C

Which of the following is correct syntax for a button click event handler, foo?

Correct Answer : D

Which method in a React Component should you override to stop the component from updating?

Correct Answer : B

What happens when you call setState() inside render() method?

Correct Answer : B

To achieve dynamic UI updates. Which of the following needs to be updated ?

Correct Answer : C

Which of the following API is necessary for React.js component?

Correct Answer : D

In component lifecycle which one is executed before rendering?

Correct Answer : C

Which method in a React Component is called after the component is rendered for the first time?

Correct Answer : B

Life cycle methods of a components fall under following categories?

Correct Answer : C