Caped Crusader Explainer


#1

The aim of this puzzle: Use a classic for loop to control exactly how many times a code block repeats.
Walkthrough of the solution: A classic for loop is used to repeat a block of code a specific number of times. A classic for loop has 3 components separated by semicolons:

  1. A start condition that declares looping variable and gives it a value.
  2. A test that keeps the classic for loop running as long as the test is true.
  3. An update operation that changes the looping variable after each iteration (loop).

For example:

for (var i = 0; i < 10; i = 1 + 1) {
  print(i)
}
  1. var i = 0 sets up the looping variable i and gives it the value 0.
  2. i < 10 is the test. The classic for loop will run as long as i is less than 10.
  3. i = i + 1 updates the value of i after each iteration, adding 1 to the value each time.

In this puzzle, a classic for loop has been set up to repeat the code print('nana') a specific number of times. After the for loop has finished running, the code will print 'Batman!' to the console.

To complete the puzzle, change the for loop’s test to i < 8, so that the code inside for loop is repeated 8 times.
Sample code solution:
(Tap below to reveal)

for (var i = 0; i < 8; i = i + 1) {
    print('nana');
}
print('Batman!');

JavaScript Concepts: Binary Expression (+), Code Block (for loop), Calling Functions, Identifiers, Loops, Variable Declaration
Grasshopper Concepts: print()


listed #2