ReactJS Quiz 1

Who developed ReactJS? (History of ReactJS)

• Google

• Microsoft

• Facebook

• Twitter

In which year was ReactJS first released? (History of ReactJS)

• 2008

• 2013

• 2015

• 2012

ReactJS was originally created for which platform? (History of ReactJS)

• Web

• Mobile

• Server

• Desktop

Which feature is the core of ReactJS? (Overview and Features of ReactJS)

• Two-way binding

• Virtual DOM

• MVC architecture

• Direct DOM manipulation

Which of the following is an advantage of ReactJS? (Advantages of ReactJS)

• Hard to maintain

• Component-based architecture

• Low performance

• Limited reusability

Which method adds an element to the end of an array? (Array and Object Intro)

• push()

• pop()

• shift()

• unshift()

Which array method returns a new array after filtering elements? (Available methods)

• map()

• reduce()

• filter()

• forEach()

Which operator is used for spreading array elements? (Spreading)

• ...

• ??

• ::

• =>

How to extract property `name` from an object `person`? (Destructuring)

• const {name} = person;

• const name = person{};

• const name = person();

• const [name] = person;

Which method is commonly used for summing values in an array? (filter and reduce)

• filter()

• map()

• reduce()

• find()