How to make Test Application with JavaScript?

Further, HTML ought to be utilized to structure the Test Application.
For styling the Test Application, use CSS.
On account of improvement of Test Application, use JavaScript for the working of the Application.
The source codes of this undertaking can be downloaded by tapping on 'Download Now' or cloned from the particular GitHub interface.

Body area:
Here all the activity happens! It additionally incorporates the parts that are noticeable when the completely practical application is being utilized toward the end clients. This is the thing we see on the stage:

Application compartment: This div (division) component fills in as the principal segment where the test application will be housed. It potentially contains styles utilized in the outside CSS sheet to determine the appearance, or the size and position of the gadget.
Test title: There is a h1 heading which includes the title of 'Straightforward Test' in a huge and obvious way.
Test segment: This div contains the genuine substance of the test and is presumably styled in the CSS with an alternate foundation.
Question: Each inquiry of the test will be set in a h2 heading that has the ID "question". It, right off the bat, has "Question goes here" which will be supplanted with genuine inquiries in JavaScript.
Answer buttons: Four buttons are gathered in a div with the id "answer-buttons". These buttons, which will have a similar appearance with CSS class "btn", will contain the response decisions for each inquiry.
Next button: There is a button named "next-btn" with the text "Next". JavaScript will presumably make this button move to the following inquiry when the client picks a response.

Building the Application's Container (application class)
The.app class characterizes the styles of the principal holder of the test application.
It has a width of 90% yet it is likewise restricted to a greatest width of 550 pixels. This likewise helps in scaling the application pleasantly on various sizes of screens while as yet keeping it moderately little.
The text tone is set to dark (#000) to guarantee it stands apart plainly against the dull foundation The foundation is set to white (#fff) to permit its substance to pop.