2015-01-14 http://www.ipreferjim.com/?p=1209

2015-01-14/Animal.js

@@ -0,0 +1,36 @@
+class Animal{
+  constructor(legs) {
+    switch (legs) {
+      case 2:
+        this.locomotion = 'bipedal';
+        break;
+      case 4:
+        this.locomotion = 'quadrapedal';
+      default:
+    }
+  }
+  move() {
+    process.stdout.writeln("I'm a %j animal!", this.locomotion);
+  }
+  static getTypeName() {
+    return "Animal";
+  }
+}
+
+class Bird extends Animal {
+  constructor(){
+    super(2);
+  }
+}
+
+class Lion extends Animal {
+  constructor(){
+    super(4);
+  }
+}
+
+var bird = new Bird();
+bird.move();
+
+var lion = new Lion();
+lion.move();

2015-01-14/fib.js

@@ -0,0 +1,18 @@
+var fibonacci = { };
+fibonacci[Symbol.iterator] = function*() {
+  var pre = 0, cur = 1;
+  for (;;) {
+    var temp = pre;
+    pre = cur;
+    cur += temp;
+    yield cur;
+  }
+}
+
+for (var n of fibonacci) {
+  // truncate the sequence at 1000
+  if (n > 1000) {
+    break;
+  }
+  process.stdout.write(n + '\n');
+}