Coding Maze Game Answers

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JavaScript Questions Explained

Landscape Coding Maze:Level 6 Stone & Ivy Coding Maze:Level 6

Tap on the Maze. Tap Bottom: Rotate. Tap Top: Move

Introduction

This page explains answers to JavaScript questions six through ten, for the Coding Maze games. Questions in the game display in random order. This page covers questions in sequential order, as the questions are stored in an array, for the game.

Each question was tested with Javascript in file, answers.js. JavaScript first saves an HTML element from the Web page. Element eDebug displays the value of x after each question.

var eDebug = document.getElementById('eDebug');

Question Six

Source code for the sixth question follows. The answer equals -1.

x = 0;
y = -4;
x = y >> 2;
eDebug.innerHTML += "6. x:"+x+"<br />";

The signed right shift operator, >>, keeps the far left sign bit, then shifts bits to the right, based on the value of the operand. The far left sign bit, for -4 equals 1. A sign bit of 0 represents a positive number. A sign bit of 1 represents a negative number.

The 32 bit value of -4, assigned to variable y, in binary, follows.

1000 0000 0000 0000, 0000 0000 0000 0100

Move bits, starting with the second bit from the left, to the right 2 places. The result equals -1 as follows.

1000 0000 0000 0000, 0000 0000 0000 0001

Question Seven

Source code for the seventh question follows. The answer equals Roy.

y = {age:20,name:"Roy"}
x = y.name;
eDebug.innerHTML += "7. x:"+x+"<br />";

Variable y receives an object with properties age and name. Property name receives the string, Roy. Copy the name value to variable x. Display x. The output equals Roy.

Question Eight

Source code for the eighth question follows. The answer equals 21.

y = {
 age:20,
 name:"Roy",
 f:function(){
  this.age++;
 }
};
y.f();
x = y.age;
eDebug.innerHTML += "8. x:"+x+"<br />";

Variable y receives an object with properties age, name and f. Property f is a function which increments the value of property age.

Call function f as follows. After the first function call, property age now equals 21.

y.f();

Assign property age to x as follows.

x = y.age;

Display x. The output equals 21.

Question Nine

Source code for the ninth question follows. The answer equals object.

x = 0;
y = [1,2,3];
x = typeof y;
eDebug.innerHTML += "9. x:"+x+"<br />";

JavaScript (ES5), has three primitive types, String, Number and Boolean. Complex types include object and function. All other types, except undefined, are considered objects. Therefore arrays are objects.

Assign the array, [1,2,3], to the variable y. The typeof operator returns object when the operand is an array.

Question Ten

Source code for the tenth question follows. The answer equals string.

y = "Chuck";
x = typeof y;
eDebug.innerHTML += "10. x:"+x+"<br />";

JavaScript (ES5), has three primitive types, String, Number and Boolean. Chuck is a string primitive type. The result equals string.

JavaScript Output:

Play Coding Maze Games

Play all six levels of coding mazes. Each level includes at least two different scenes.

Play Maze Games

The following diagram illustrates how to move around the mazes. Tap on the top part of the maze to move forward. Tap on the lower left to rotate left. Tap on the lower right to rotate right.

Tap Top - Move Forward, Tap Bottom Left - Rotate Left, Tap Bottom Right - Rotate Right

Tap ON the Maze to Move!

1. Move Forward: Tap on the top of the maze or press k, on the keyboard.
2. View Left: Tap on the bottom left of the maze or press h, on the keyboard.
3. View Right: Tap on the bottom right of the maze or press l, on the keyboard.
4. Path Glows: For help tap the Q & A button. The Q & A area displays with a question. Answer the question correctly then your next step glows bright. Move in the direction of the glowing path.

Look Straight Ahead to Move

Look straight down a path in the maze to move forward. Then tap in the top area of the maze. You can't move when facing a corner, wall, or facing a wall at an angle. You'll hear a ding sound when you tap to move, while facing the wrong direction.

Goal

Escape each maze with the shortest route possible. When the game starts, the shortest escape path displays under the maze. Tap on the maze to move forward, rotate left and right.

Post Your Score!

After you've escaped the maze, post your score online.

Scoring

Find your way out of the maze while taking the fewest number of steps. If you take the most direct route out of the maze, then you'll have the highest score for that level.

Each level's more difficult. Therefore your maximum score increases per level. For example, the highest score for level 1 equals 100 and the highest score for level 6 equals 600. The highest score for level 2 equals 200, and so on.

After every step your score displays under the maze, along with the number of steps you've taken in the maze. If you find your way out with no wrong turns, you'll have the highest score for that level.

Lose Points

Your score starts to decrease after you take too many steps. Every extra step costs you five points.

Post Your Score!

When you escape the maze, your score displays below the maze. Post you score online.

Heading Arrow

Directions

The heading arrow above the maze, displays your current direction. Game information displays below the maze. The heading arrow faces up when you're heading north. The arrow faces right when you're heading east. The arrow faces down when you're heading south and left when you're heading west. Game information displays below the maze.

Preparation

Maze Games

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What's a Coding Maze?

A Coding Maze game, like any other maze, challenges you to escape. Find your way out with the fewest steps. However Coding Mazes highlight the next step in the maze when you answer JavaScript questions correctly.

Solve JavaScript Problems

Answer JavaScript questions when you get lost. Tap the Q & A button. A programming question displays. Answer the question correctly, then the next step in the maze turns bright. If you don't see a highlighted path, then tap the lower left or right, of the maze, to look around.

Answer JavaScript Questions

HIGHLIGHT YOUR NEXT STEP!

Tap the green Q & A button to see questions while playing. An JavaScript question displays in the Question Area, after you press the Q & A button. Then below the question, three multiple choice answers display. Select one of the multiple choice options as your answer.

If you answer correctly, you'll hear a chime and the next step in the maze turns bright. You might need to look right, left or behind you, to see the next step. If so, tap on the bottom right side of the maze to look right. Tap on the bottom left side of the maze to look left. When you see the highlight, you're facing the right direction, then tap on the top of the maze to move forward.

The maze walls and floor turn brighter, just for the very next step toward freedom. If you're facing the highlighted section, then tap on the top of the maze to move toward the highlighted, brightest, section of the maze. Highlights, on the walls and floor, lead the way out of the maze, as you solve JavaScript questions.

Answer up to ten JavaScript questions. When you escape, post your score online!

See the Maze Video!

Video Tap to Walk through the Maze

See More

Coding Games

Enjoy free programming games for fun and inspiration. Games help memorization and provide encouragment. Learn math with online games. Play 3D games on cell phones, iPhone, Android, tablets, mobile phones and full Computers.

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