diff --git a/.eslintrc.yml b/.eslintrc.yml
new file mode 100644
index 0000000..a17542c
--- /dev/null
+++ b/.eslintrc.yml
@@ -0,0 +1,173 @@
+env:
+  es6: true
+  node: true
+extends: 'eslint:recommended'
+globals:
+  api: false
+rules:
+  indent:
+    - error
+    - 2
+    - SwitchCase: 1
+      VariableDeclarator:
+        var: 2
+        let: 2
+        const: 3
+      MemberExpression: 1
+  linebreak-style:
+    - error
+    - unix
+  quotes:
+    - error
+    - single
+  semi:
+    - error
+    - always
+  eqeqeq:
+    - error
+    - always
+  no-loop-func:
+    - error
+  strict:
+    - error
+    - global
+  block-spacing:
+    - error
+    - always
+  brace-style:
+    - error
+    - 1tbs
+    - allowSingleLine: true
+  camelcase:
+    - error
+  comma-style:
+    - error
+    - last
+  comma-spacing:
+    - error
+    - before: false
+      after: true
+  eol-last:
+    - error
+  func-call-spacing:
+    - error
+    - never
+  key-spacing:
+    - error
+    - beforeColon: false
+      afterColon: true
+      mode: minimum
+  keyword-spacing:
+    - error
+    - before: true
+      after: true
+      overrides:
+        function:
+          after: false
+  max-len:
+    - error
+    - code: 80
+      ignoreUrls: true
+  max-nested-callbacks:
+    - error
+    - max: 7
+  new-cap:
+    - error
+    - newIsCap: true
+      capIsNew: true
+      properties: true
+  new-parens:
+    - error
+  no-lonely-if:
+    - error
+  no-trailing-spaces:
+    - error
+  no-unneeded-ternary:
+    - error
+  no-whitespace-before-property:
+    - error
+  object-curly-spacing:
+    - error
+    - always
+  operator-assignment:
+    - error
+    - always
+  operator-linebreak:
+    - error
+    - after
+  semi-spacing:
+    - error
+    - before: false
+      after: true
+  space-before-blocks:
+    - error
+    - always
+  space-before-function-paren:
+    - error
+    - never
+  space-in-parens:
+    - error
+    - never
+  space-infix-ops:
+    - error
+  space-unary-ops:
+    - error
+    - words: true
+      nonwords: false
+      overrides:
+        typeof: false
+  no-unreachable:
+    - error
+  no-global-assign:
+    - error
+  no-self-compare:
+    - error
+  no-unmodified-loop-condition:
+    - error
+  no-constant-condition:
+    - error
+    - checkLoops: false
+  no-console:
+    - off
+  no-useless-concat:
+    - error
+  no-useless-escape:
+    - error
+  no-shadow-restricted-names:
+    - error
+  no-use-before-define:
+    - error
+    - functions: false
+  arrow-body-style:
+    - error
+    - as-needed
+  arrow-spacing:
+    - error
+  no-confusing-arrow:
+    - error
+    - allowParens: true
+  no-useless-computed-key:
+    - error
+  no-useless-rename:
+    - error
+  no-var:
+    - error
+  object-shorthand:
+    - error
+    - always
+  prefer-arrow-callback:
+    - error
+  prefer-const:
+    - error
+  prefer-numeric-literals:
+    - error
+  prefer-rest-params:
+    - error
+  prefer-spread:
+    - error
+  rest-spread-spacing:
+    - error
+    - never
+  template-curly-spacing:
+    - error
+    - never
\ No newline at end of file
diff --git a/JavaScript/class.js b/JavaScript/class.js
new file mode 100644
index 0000000..4074178
--- /dev/null
+++ b/JavaScript/class.js
@@ -0,0 +1,22 @@
+'use strict';
+
+class Fruit {
+  constructor(type) {
+    this.type = type;
+  }
+  eat() {
+    console.log(`You ate ${this.type}`);
+  }
+}
+
+class Apple extends Fruit {
+  constructor(color) {
+    super('apple');
+    this.color = color;
+  }
+}
+
+const apple = new Apple('green');
+
+console.dir(apple);
+apple.eat(); // You ate apple
diff --git a/JavaScript/functional.js b/JavaScript/functional.js
new file mode 100644
index 0000000..184eda9
--- /dev/null
+++ b/JavaScript/functional.js
@@ -0,0 +1,23 @@
+'use strict';
+
+function Fruit(type) {
+  this.type = type;
+  this.eat = () => {
+    console.log(`You ate ${this.type}`);
+  };
+}
+
+function Apple(color) {
+  Fruit.call(this, 'apple');
+  this.color = color;
+}
+
+const apple = new Apple();
+
+let value;
+for (const name in apple) {
+  value = apple[name];
+  console.log(`${name} : ${value}`);
+}
+
+apple.eat(); // You ate apple
diff --git a/JavaScript/prototypal.js b/JavaScript/prototypal.js
new file mode 100644
index 0000000..d9f91ff
--- /dev/null
+++ b/JavaScript/prototypal.js
@@ -0,0 +1,23 @@
+'use strict';
+
+function Fruit(type) {
+  this.type = type;
+  this.eat = () => {
+    console.log(`You ate ${this.type}`);
+  };
+}
+
+function Apple(color) {
+  this.color = color;
+}
+Apple.prototype = new Fruit('apple');
+
+const apple = new Apple('green');
+
+let value;
+for (const name in apple) {
+  value = apple[name];
+  console.log(`${name} : ${value}`);
+}
+
+apple.eat(); // You ate apple
diff --git a/LICENSE b/LICENSE
index 8864d4a..911ea4a 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,21 +1,21 @@
-MIT License
-
-Copyright (c) 2017 
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+MIT License
+
+Copyright (c) 2017 
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
index 5b571c0..74075f0 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,2 @@
-# Inheritance
-Inheritance in Different Paradigms
+# Inheritance
+Inheritance in Different Paradigms