add code for classwork on arrow functions

pankaj28843 · pankaj28843 · commit 80d815552671 · 2019-06-16T16:10:09.000+02:00
diff --git a/JavaScript2/Week5/classwork-arrow-functions/index.html b/JavaScript2/Week5/classwork-arrow-functions/index.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <meta http-equiv="X-UA-Compatible" content="ie=edge">
+  <title>Document</title>
+  <link type = "text/css" href="./main.css" rel="stylesheet">
+</head>
+<body>
+  <h1>Hello world!</h1>
+  <script src="./main.js"></script>
+</body>
+</html>
diff --git a/JavaScript2/Week5/classwork-arrow-functions/main.css b/JavaScript2/Week5/classwork-arrow-functions/main.css
diff --git a/JavaScript2/Week5/classwork-arrow-functions/main.js b/JavaScript2/Week5/classwork-arrow-functions/main.js
@@ -0,0 +1,57 @@
+function squareMeOld(n) {
+  return n * n;
+}
+
+const squareMe = n => n ** 2;
+
+function foo(n) {
+  return n + 2;
+}
+
+const foo1 = n => n + 2;
+
+const numbers = [1, 2, 3, 4, 5];
+
+const result = numbers
+  .map(n => n + 2)
+  .map(x => x * 4)
+  .map(z => Math.sqrt(z));
+
+console.log(result);
+
+const interimResult1 = numbers.map(n => n + 2);
+console.log(interimResult1);
+
+const interimResult2 = interimResult1.map(x => x * 4);
+console.log(interimResult2);
+
+const finalResult = interimResult2.map(z => Math.sqrt(z));
+console.log(finalResult);
+
+
+// =>
+// ->
+// this
+
+console.log(squareMe(10));
+console.log(squareMe(15));
+console.log(squareMe(5));
+
+
+const mentors = [
+  { name: 'Abed Sujan', subjects: ['JS', 'HTML', 'CSS', 'NODEJS'], yearOfExperience: 4 },
+  { name: 'Ahmed Magdy', subjects: ['JS', 'Database', 'CSS'], yearOfExperience: 1 },
+  { name: 'Alicia Gonzales', subjects: ['DB', 'HTML', 'NODEJS'], yearOfExperience: 8 },
+  { name: 'allan Thraen', subjects: ['REACT', 'HTML', 'CSS'], yearOfExperience: 3 },
+  { name: 'Anders Ravn', subjects: ['JS', 'HTML', 'NODEJS'], yearOfExperience: 2 },
+  { name: 'Daniel Fernandes', subjects: ['Database', 'HTML', 'CSS'], yearOfExperience: 9 }
+];
+
+// Map mentors array to a new array containing number of subjects each mentor can teach
+// Use
+// 1. Arrow functions
+// 2. Array.map
+
+
+const subjectCountsArray = mentors.map(m => m.subjects.length);
+console.log(subjectCountsArray);
