Coding Study Buddy

Full details

Questions are drawn at random from a bank covering HTML (elements, attributes, forms, and tables), JavaScript (variables, functions, arrays, objects, and changing the page through the DOM), and accessible coding — writing markup and scripts that work for everyone, including people using screen readers and keyboards. Many JavaScript questions show a short piece of code and ask what it does; every one of those answers was verified by actually running the code.

Every question is a fresh random draw. You will never see the same question twice in one session, and the tool remembers questions you have already seen so later sessions stay different too.

When you press Start, a dialog asks how many questions you want. The default is the whole bank: leave the field blank and press Next. Or choose by percentage of the bank from 10% to 90%, or by number of questions. The number of questions you will get is shown in the dialog as you type. The chosen number is the most questions the session can include; the session can still end early if your accuracy drops below 70%.

Each question is multiple-choice, true or false, or fill in the blank. Press Submit answer to record your answer — the next question loads right away. There is no separate Next button. You will not be told whether an answer is right or wrong while the session is running. Each new question is announced as soon as it loads. Your accuracy is first checked once you have answered five questions, and after every answer from then on. If your accuracy has dropped below 70% at that point, the session ends and you move to the review. At exactly 70%, you keep going.

The review shows every question from the session: what you answered, whether it was right or wrong, the correct answer, a short explanation, and a link to read more about that topic. You can filter the review to show all questions, only the ones you answered correctly, or only the ones you answered incorrectly. When you are ready, press Start over to run a fresh set.

You can also change the display contrast on the start screen: press the "Show display contrast options" button, then choose Default, High contrast, or Dark. Your choice applies to the whole tool and is remembered for your next visit.

This tool is a study aid, not a certification. If a question ever looks wrong to you, check the linked source — the source is the authority.