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Quiz

Test your knowledge of the JavaScript techniques you used in this hour by answering the following questions.

Questions

1:Which array can you use to change images in a Web page?
  1. this

  2. document.src

  3. document.images

A1: c. The document.images array can be used to change images on a page.
2:Which of the following is the correct expression for a random integer between 1 and 52?
  1. Math.random(52)

  2. Math.floor(52*Math.random() + 1)

  3. Math.floor(52*Math.random())

A2: b. Because the Math.random method returns a number between 0 and 1, the correct expression is Math.floor(52*Math.random() + 1).
3:What are the odds of being dealt a royal flush while playing this game?
  1. 1 in 5,000

  2. 1 in 50,000

  3. 1 in 500,000

A3: c. The odds are about one in half a million, but I didn't really expect you to know that offhand.


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