Add deepcopy function

src/app/services/deepCopy.ts

@@ -0,0 +1,33 @@
+export function deepCopy(obj) {
+    var copy: any;
+
+    // Handle the 3 simple types, and null or undefined
+    if (null == obj || "object" != typeof obj) return obj;
+
+    // Handle Date
+    if (obj instanceof Date) {
+        copy = new Date();
+        copy.setTime(obj.getTime());
+        return copy;
+    }
+
+    // Handle Array
+    if (obj instanceof Array) {
+        copy = [];
+        for (var i = 0, len = obj.length; i < len; i++) {
+            copy[i] = deepCopy(obj[i]);
+        }
+        return copy;
+    }
+
+    // Handle Object
+    if (obj instanceof Object) {
+        copy = {};
+        for (var attr in obj) {
+            if (obj.hasOwnProperty(attr)) copy[attr] = deepCopy(obj[attr]);
+        }
+        return copy;
+    }
+
+    throw new Error("Unable to copy obj! Its type isn't supported.");
+}