How might you check property types without using Flow or TypeScript?

What syntax do you use to create a component in React?

You want to disable a button so that it does not emit any events onClick. Which prop do you use to acomplish this?

When does the componentDidMount function fire?

What might you use webpack for?

When using the React Developer Tools Chrome extension, what does it mean if the React icon is red?

Which of the following statements is! are correct about the ReactJS features?

1. In a ReactJS application, all components have a state.

2. ReactJS virtual DOM can differentiate between a static and a dynamic element.

3. Rendering is possible using a virtual DOM even without dirty checking.

Which Of the following is the correct signature of React testRenderer.update method that is used for re-rendering the in-memory tree with a new root element?

In relation to React renderIntoDocument() function, which of the following options should be present globally before importing React?

i) window

ii) window.document

iii) window.document.createElement

Which of the following methods is skipped on a component that triggered the update when the forceUpdate() method is called?