Online Test ReactJS

Thanks for taking the ReactJS Softon Digital Online Test

You have 6 minute to answer 19 questions, after that you will not be able to continue the test.

Name Email
Data flow from owner to owned components using which of the following?
Which of the following mounting methods is/are invoked before the component is inserted into DOM?
Pre and post lifecycle methods of components are represented using
PropTypes is used for
The default value of input field could be set using which of the following attribute?
Which of the following methods change the state of the component?
A component can mutate its properties as and when required
Input field that does not supply a value is called as
Mixins are used to take care of cross-cutting concerns

ReactJS renders Components (classes) if the element is defined in

Life cycle methods of a components fall under following categories?
A parent component could access or read its children components properties
The value of textarea is set using its children in the same way like HTML
Which of the following is used to trigger a UI update?
One can define default values for properties, props, using which of the following method?
An owner component defines its children component within render method
Change or update to large number of nodes is optimized using which of the following techniques?
ReactJS renders HTML tags if the element is defined in
To use native javascript as an attribute value, the expression should be wrapped within

Softon Digital - All rights reserved

Back to Top