adding chapter 3 code

bethrobson · bethrobson · commit 8d3bff5ab1cb · 2013-04-28T15:18:37.000-07:00
diff --git a/chapter3/areaAndDistance.html b/chapter3/areaAndDistance.html
@@ -0,0 +1,44 @@
+<!doctype html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>Area and Distance</title>
+  </head>
+  <body>
+  </body>
+  <script>
+var x = 32;
+var y = 44;
+var radius = 5;
+
+var centerX = 0;
+var centerY = 0;
+var width = 600;
+var height = 400;
+
+function setup(width, height) {
+    centerX = width/2;
+    centerY = height/2;
+}
+
+function computeDistance(x1, y1, x2, y2) {
+    var dx = x1 - x2;
+    var dy = y1 - y2;
+    var d2 = (dx * dx) + (dy * dy);
+    var d = Math.sqrt(d2);
+    return d;
+}
+
+function circleArea(r) {
+    var area = Math.PI * r * r;
+    return area;
+}
+
+setup(width, height);
+var area = circleArea(radius);
+var distance = computeDistance(x, y, centerX, centerY);
+alert("Area: " + area);
+alert("Distance: " + distance);
+  </script>
+</body>
+</html>
diff --git a/chapter3/bake.html b/chapter3/bake.html
@@ -0,0 +1,33 @@
+<!doctype html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>Bake (with return)</title>
+  </head>
+  <body>
+  </body>
+  <script>
+function bake(degrees) {
+    var message;
+
+    if (degrees > 500) {
+        message = "I'm not a nuclear reactor!";
+    } else if (degrees < 100) {
+        message = "I'm not a refrigerator!";
+    } else {
+        message = "That's a very comfortable temperature for me.";
+        setMode("bake");
+        setTemp(degrees);
+    }
+    return message;
+}
+
+var status = bake(350);
+
+// Here so the code will run!
+function setMode(mode) { };
+function setTemp(degrees) { };
+
+  </script>
+</body>
+</html>
diff --git a/chapter3/bark.html b/chapter3/bark.html
@@ -0,0 +1,26 @@
+<!doctype html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>Bark</title>
+  </head>
+  <body>
+  </body>
+  <script>
+function bark(name, weight) {
+   if (weight > 20) {
+      console.log(name + " says WOOF WOOF");
+   } else {
+      console.log(name + " says woof woof");
+   }
+}
+bark("rover", 23);
+
+bark("spot", 13);
+
+bark("spike", 53);
+
+bark("lady", 17);
+  </script>
+</body>
+</html>
diff --git a/chapter3/sherluck.html b/chapter3/sherluck.html
@@ -0,0 +1,26 @@
+<!doctype html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>Five Minute Mystery</title>
+  </head>
+  <body>
+  </body>
+  <script>
+var balance = 10500;
+var cameraOn = true;
+
+function steal(balance, amount) {
+    cameraOn = false;
+    if (amount < balance) {
+        balance = balance - amount;
+    }
+    return amount;
+    cameraOn = true;
+}
+
+var amount = steal(balance, 1250);
+alert("Criminal: you stole " + amount + "!");
+  </script>
+</body>
+</html>
diff --git a/chapter3/thingamajig.html b/chapter3/thingamajig.html
@@ -0,0 +1,38 @@
+<!doctype html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>The Thing-a-ma-jig</title>
+  </head>
+  <body>
+  </body>
+  <script>
+function clunk(times) {
+    var num = times;
+    while (num > 0) {
+        console.log("clunk");
+        clunkCounter = clunkCounter + 1;
+        num = num - 1;
+    }
+}
+
+function thingamajig(size) {
+    var facky = 1;
+    if (size == 0) {
+       console.log("clank");
+    } else if (size == 1) {
+       console.log("thunk");
+    } else {
+        while (size > 1) {
+            facky = facky * size;
+            size = size - 1;
+        }
+        clunk(facky);
+    }
+}
+var clunkCounter = 0;
+thingamajig(5);
+console.log(clunkCounter);
+  </script>
+</body>
+</html>
