Add class instantiation example

tshemsedinov · tshemsedinov · commit a8d42aed61d5 · 2017-03-25T23:50:37.000+02:00
diff --git a/JavaScript/3-instantiation.js b/JavaScript/3-instantiation.js
@@ -2,43 +2,18 @@
 
 const benchmark = require('./2-benchmark.js');
 
-benchmark.do(10000000, 5, [
-  defineObject,
-  defineArray,
-  defineArrayOfString,
-  defineArrayOfNumber,
-  mixinObject,
-  newInstance,
-  newObject,
-  objectCreate,
-  callFactory
-]);
-
 function defineArray() {
-  return [
-    'world',
-    100500,
-    true
-  ];
+  return ['world', 100500, true];
 }
 
 function defineArrayOfString() {
-  return [
-    'world',
-    'world',
-    'world'
-  ];
+  return ['world', 'world', 'world'];
 }
 
 function defineArrayOfNumber() {
-  return [
-    100500,
-    100500,
-    100500
-  ];
+  return [100500, 100500, 100500];
 }
 
-
 function defineObject() {
   return {
     hello: 'world',
@@ -55,12 +30,26 @@ function mixinObject() {
   return obj;
 }
 
-function newInstance() {
-  return new Item(
-    'world',
-    100500,
-    true
-  );
+function ProtoItem(hello, size, flag) {
+  this.hello = hello;
+  this.size = size;
+  this.flag = flag;
+}
+
+function newPrototype() {
+  return new ProtoItem('world', 100500, true);
+}
+
+const ClassItem = class {
+  constructor(hello, size, flag) {
+    this.hello = hello;
+    this.size = size;
+    this.flag = flag;
+  }
+};
+
+function newClass() {
+  return new ClassItem('world', 100500, true);
 }
 
 function newObject() {
@@ -80,23 +69,22 @@ function objectCreate() {
 }
 
 function callFactory() {
-  return item(
-    'world',
-    100500,
-    true
-  );
+  return itemFactory('world', 100500, true);
 }
 
-function Item(hello, size, flag) {
-  this.hello = hello;
-  this.size = size;
-  this.flag = flag;
+function itemFactory(hello, size, flag) {
+  return { hello, size, flag };
 }
 
-function item(hello, size, flag) {
-  return {
-    hello,
-    size,
-    flag
-  };
-}
+benchmark.do(10000000, 5, [
+  defineObject,
+  defineArray,
+  defineArrayOfString,
+  defineArrayOfNumber,
+  mixinObject,
+  newPrototype,
+  newClass,
+  newObject,
+  objectCreate,
+  callFactory
+]);
