Let's say you want to repeat a shape horizontally across the 400x400 canvas, with 40 pixels between each shape. Which for loop would help you code that?
for (var x = 0; x > 400; x += 40) { }
for (var x = 0; x < 400; x += 40) { }
for (var x = 0; x < 400; x++) { }
for (var x = 0; x > 400; x++) { }