add some datatype examples

ex1a-objects.js

@@ -0,0 +1,60 @@
+#! /usr/bin/env nodejs
+
+var book_list = [
+    "Wuthering Heights",
+    "A Tale of Two Cities",
+    "Great Expectations",
+    "Les Misérables"
+]
+console.log(book_list);
+console.log();
+
+var victor_hugo = {
+    name: "Victor Hugo",
+    born: "18020226",
+    died: "18850522"
+}
+
+var authors = {
+    hugo: {
+	name: "Victor Hugo",
+	born: new Date("1802-02-26"),
+	died: new Date("1885-05-22"),
+	books: [
+	    "Les Misérables",
+	    "The Hunchback of Notre-Dame"
+	]
+    },
+    dickens: {
+	name: "Charles Dickens",
+	born: new Date("1812-02-07"),
+	died: new Date("1870-06-09"),
+	books: [
+	    "A Tale of Two Cities",
+	    "Greate Expectations"
+	]
+    }
+};
+Object.keys(authors).forEach(function(author) {
+    console.log(author);
+    console.log(authors[author].books[0]);
+    console.log();
+});
+
+var Phone = function() {
+    this.number = parseInt(Math.random()*10000000),
+    this.carrier = "Verizon"
+};
+Phone.prototype = {
+    call: function(number) {
+	console.log("Dialing " + number);
+	console.log("call failed :(");
+    },
+    switchCarrier: function(new_carrier) {
+	this.carrier = new_carrier;
+    }
+};
+
+var my_phone = new Phone();
+console.log("my number: " + my_phone.number);
+my_phone.call("855-MakerBar");