Finished Chapter 5.3 Using Objects with Functions

notes/chapter5_javascript-objects.md

@@ -13,3 +13,10 @@ let object_name = {
 To access a single property, using `.` (dot) operator
 
 Check code in [object-101.js](../src/objects/objects-101.js)
+
+## Using Objects with Functions
+
+Parse objects into function just like normal number, it allow us to parse multiple values into function as a single value. Or get multiple values as single value from a function
+
+Exmple check [object-function.js](../src/objects/objects-functions.js)
+

src/objects/objects-functions.js

@@ -0,0 +1,44 @@
+// Parse object into function
+let myBook = {
+    title: '1984',
+    author: 'George Orwell',
+    pageCount: 326
+}
+
+let otherBook = {
+    title: 'A Peoples History',
+    author: 'Howard Zinn',
+    pageCount: 723
+}
+
+let getSummary = function (book) {
+    console.log(`${book.title} by ${book.author}`);
+}
+
+getSummary(myBook)
+getSummary(otherBook)
+
+// Getting object out of function
+getSummary = function (book) {
+    return {
+        summary: `${book.title} by ${book.author}`,
+        pageCountSummary: `${book.title} is ${book.pageCount} pages long`
+    }
+}
+
+console.log(getSummary(myBook))
+console.log(getSummary(otherBook))
+
+
+// Challenge area
+// Create function - take fahrenheit in - return ojbect with all three
+let converFahrenheit = function (fahrenheit) {
+    return {
+        fahrenheit: fahrenheit,
+        celsius: (fahrenheit - 32) * (5/9),
+        kelvin: (fahrenheit + 459.67) * (5/9)
+    }
+}
+
+let temps = converFahrenheit(20);
+console.log(temps)