The primary categories of components in React Router are:

What will be the output of the following code snippet:

var result = true + true + true * 2; console.log(result);

What is the purpose of the Script tab?

What is the property to access the first child of a node?

When will the browser invoke the event handler?

What does the usedJsHeapSize property indicate?

Which of the following methods is used to access HTML elements using Javascript?

What is the name of the React lifecycle method called just before rendering takes place in the DOM?

If X is the superclass and Y is the subclass, then how can the subclass inherit the superclass?

What is a Virtual DOM?