JavaScript Level 1

How do I generate a random number from 0 to less than 1?

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How do I add comments in my codes?

• Use double forward slash, like this:

  // say something

• Use /* and */ to enclose some lines of text as comments

• Use #, hash symbol, like this:

  # say something

• Use <!-- and --> to enclose some lines of text as comments

Which of the following will ask for input when you run the program?

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What will be printed in the console?

• Error. This code cannot run.

• 29 February

• 11 February

• 2+9+February

Which of the following is/are valid JavaScript variable name(s)?

• num1

• 1num

• my_name

• my name

I want to use a String variable to store some text value in my program. Which one is correct?

• let some text = can i ask a question?;

• def some_text = "can i ask a question?";

• let some_text = "can i ask a question?";

• def some_text = can i ask a question?;

I want to use a number variable to store some numerical value in my program. Which one is correct?

• let 1num = 100;

• def 1num = "100";

• let num1 = 100;

• let num1 = "100";

Which function should I use to convert String value to number?

• int()

• parseInt()

• ParseInt()

• parseint()

What is printed in the console when you run this program?

• Error. This code has syntax error.

• you can proceed to book for a vaccination slot now.

• please wait for further notification.

• Nothing is printed in the console.

Which function do I use for a pop-up window to show some text messages?

• alert()

• print()

• prompt()

• console.log()