episode for function scope

episode1.js

@@ -0,0 +1,15 @@
+// 作用域对接
+
+function foo(a) {
+    var b = 2;
+    // some code
+    function bar() {
+        // ..
+    }
+    // more code
+    var c = 3;
+}
+
+bar()
+
+console.log(a, b, c);

episode2.js

@@ -0,0 +1,28 @@
+function doSomething(a) {
+    b = a + doSomethingElse(a * 2)
+
+    console.log(b * 3);
+}
+
+function doSomethingElse(a) {
+    return a - 1;
+}
+
+var b;
+
+doSomething(2);
+
+
+// more reesonable 
+function doSomething(a) {
+    function doSomethingElse(a) {
+        return a - 1;
+    }
+
+    var b;
+    b = a + doSomethingElse(a * 2);
+    console.log(b * 3);
+}
+
+doSomething(2)
+

episode3.js

@@ -0,0 +1,22 @@
+var MyReallyCoolLibrary = {
+    awesome: "stuff",
+    doSomething: function () {
+
+    },
+    doAnotherThing: function () {
+
+    }
+}
+
+console.log(MyReallyCoolLibrary.awesome)
+console.log(MyReallyCoolLibrary.doSomething)
+console.log(MyReallyCoolLibrary.doAnotherThing)
+
+
+var a = 2;
+function foo() {
+    var a = 3;
+    console.log(a);
+}
+console.log(foo());
+console.log(a);