Intro to JavaScript

Let's say you defined a function called startTheParty in your program. What line of code would call that function?

• startTheParty;
• startTheParty();
• var startTheParty = true;
• var startTheParty();

You want to define a function for drawing houses and then use it to draw multiple houses. Where should you define that function?

• At the beginning of the program, before you call it.
• Right after you call it.
• At the very end of the program.
• It doesn't matter one bit!

Which of these lines of code correctly define a function?

• var dropTheBeat = function() [ ];
• dropTheBeat = function() { };
• var dropTheBeat = function() { };
• var dropTheBeat = function { };

Which of these lines of code define a function that takes 2 parameters?

• var funkyFunc = function(note, tempo) { };
• var funkyFunc = function() { };
• var funkyFunc = function([note, tempo]) { };
• var funkyFunc = function() {
     var note, tempo;
  }; 

You have a function named funkyFunc that takes 2 parameters. What line of code validly calls it and passes in 2 values?

• funkyFunc = 'A', 20;
• funkyFunc('A' 20);
• funkyFunc(['A', 20]);
• funkyFunc('A', 20);

You've defined a function named calcAge that takes three parameters (day/month/year) and returns a value. How do you call that function and store the resulting value?

• var calcAge(24, 6, 1984);
• var age = calcAge(24, 6, 1984);
• var age = calcAge(24/6/1984);
• var age = calcAge = 24, 6, 1984;

What keyword do you need to use if you want your function to return a value?

• return
• echo
• sendback
• reply

Which of these lines of JS code are syntactically correct?

• rect(100, 100, 50, 50);
• rect[100, 100, 50, 50];
• rect(100 100 50 50);
• rect(100, 100, 50, 50):

Which of these lines of JS code are syntactically correct?

• ellipse(100; 100; 50; 50);
• ellipse(100 100 50 50);
• ellipse  (100, 100, 50, 50)
• ellipse(100, 100, 50, 50);

In the  Khan Academy programming environment, where is the point (0, 0)?

• upper left corner
• center
• upper right corner
• lower left corner