From e845c39b4e985a4954e5a38ecd9387f5d3e433b9 Mon Sep 17 00:00:00 2001
From: Yohan Choi <ychoi63@myseneca.ca>
Date: Wed, 30 Oct 2019 22:47:06 -0400
Subject: [PATCH] adding more exercise to map_object.js

---
 JavaScript_Advance/map_object.js | 46 +++++++++++++++++++++++++++++++-
 1 file changed, 45 insertions(+), 1 deletion(-)

diff --git a/JavaScript_Advance/map_object.js b/JavaScript_Advance/map_object.js
index 7219d42..3cc2e30 100644
--- a/JavaScript_Advance/map_object.js
+++ b/JavaScript_Advance/map_object.js
@@ -59,4 +59,48 @@ for (const amount of recipeMap.values()) {
 // iterate over [key, value] entries
 for (const entry of recipeMap) { // the same as of recipeMap.entries()
   alert(entry); // cucumber,500 (and so on)
-}
\ No newline at end of file
+}
+
+/*
+Loop with forEach
+Instead of using for loop, forEach can be used.
+
+map.forEach(function(value, key){
+
+});
+
+or with array function
+
+map.forEach((value, key) => {
+
+})
+
+*/
+
+recipeMap.forEach((value, key) => {
+  alter(key + " = " + value);
+});
+
+/*
+Convert To Arrays
+A map obejct can be convert to arrays
+
+var array = Array.from(map) - create an array of the key-value pairs
+
+var array = Array.from(map.value()) - Create an array of the values
+
+var array = Array.from(map.key()) - Create an array of the keys
+
+*/
+
+// create an array of the key-value pairs
+const keyValArr = Array.from(recipeMap);
+alter(keyValArr);
+
+// Create an array of the values
+const ValArr = Array.from(recipeMap);
+alter(ValArr);
+
+// Create an array of the keys
+const keyArr = Array.from(recipeMap);
+alter(keyArr);
\ No newline at end of file