Debugging

Why isn't my square showing up?

background(255);

fill(0, 0, 255);

quad(150, 150, 75, 75);

• There aren't enough numbers in background

• There aren't enough numbers in quad

• Quad cannot draw squares

• There's no draw function

Why isn't my code running?

if (x > 12)

fill(0);

else

fill(255, 0, 0);

• x can't be greater than 12

• Missing braces after if and else

• The first fill doesn't have enough numbers in it

• Else is not a keyword in javascript

Why isn't my code working?

var draw = fuction() {

fill(255, 0, 255);

ellipse(x, 200, 50, 50);

x++;

};

• Unnecessary semicolon

• A word is misspelled

• Missing a comma

• = should be ===

Why isn't my code working?

for (var i = 0; 1 < 20; i++) {

ellipse(random(400), random(400), 50, 50);

}

• Missing semicolon

• Random doesn't have enough numbers in it

• You wrote 1 instead of i

• Improper definition of i

Why isn't my code working?

var Thing = {

x : 12,

size : 20,

};

var thing1 = new Thing();

• Thing is not an object prototype

• Size is a reserved word

• Commas should be semicolons

• You can't use numbers in variable names

I'm trying to reset my ellipse to the left side of the screen. Why has it disappeared?

if (x < 400) {

x = -50;

}

• Less than sign should be greater than sign

• = should be ===

• Missing semicolon

• Missing else statement

What should I add to make my circle move across the screen?

var x = 0;

ellipse(x, 200, 50, 50);

x++;

• A draw function

• A background

• A fill function

• All three

Why isn't my code working?

var draw() {

fill(255, 255, 0);

rect(150, 150, 75, 75);

};

• Unnecessary semicolon

• A word is misspelled

• Improper declaration of draw

• Extra comma

Why isn't my code working?

var draw = function() {

fill(0, 255, 0,);

ellipse(200, 200, 50, 50);

};

• Extra comma

• Improper declaration of draw

• A word is misspelled

• Unnecessary semicolon

Why isn't my code working?

if (0 === round(random(0, 1)) {

fill(255);

}

• Missing parenthesis

• === should be =

• 0 and round(random(0, 1)) should be swapped

• Missing semicolon