From 7dfe87001b7e6c1ade82f0237c533aabdcbd3506 Mon Sep 17 00:00:00 2001
From: Mark Crowther <mark.crowther@bjss.com>
Date: Mon, 13 Jul 2020 15:19:57 +0100
Subject: [PATCH] Adde variable scope examples

---
 README.md                                           |  2 +-
 variable-scope-by-example/let-scope-by-example.js   | 11 +++++++++++
 .../variable-scope-by-example.js                    | 13 +++++++------
 3 files changed, 19 insertions(+), 7 deletions(-)
 create mode 100644 variable-scope-by-example/let-scope-by-example.js

diff --git a/README.md b/README.md
index ce8d73b..c0b0e70 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ If there's anything that you think could be improved due to misunderstanding, th
 # The 1000 Things
 Structure of the repo Things are as *folder > main js file*, along with the supporting HTML and CSS files.
 
-(9) Scope example > variable-scope-by-example.js<br>
+(9) Variable and let scope example > variable-scope-by-example.js / let-scope...<br>
 (8) Maths Hero > updated-maths-engine.js<br>
 (7) Game Sounds > soundPlayer.js<br>
 (6) Name Changer > namechange.js<br>
diff --git a/variable-scope-by-example/let-scope-by-example.js b/variable-scope-by-example/let-scope-by-example.js
new file mode 100644
index 0000000..712a268
--- /dev/null
+++ b/variable-scope-by-example/let-scope-by-example.js
@@ -0,0 +1,11 @@
+let aVariableOutsideACodeBlock = 10;
+
+    if (aVariableOutsideACodeBlock == 10) {
+        let aVariableINSIDE = 20;
+        console.log("aVariableOutsideACodeBlock called from INSIDE the code block is : " + aVariableOutsideACodeBlock);
+        console.log("aVariableINSIDE called inside and set inside is: " + aVariableINSIDE);
+    }
+// The below works if we use var, change the var keywords to let and it will fail
+// This demonstrates the better scope control of let
+console.log("## We now call a let set inside a block, but from the outside, so should see an error");
+console.log("aVariableINSIDE called from OUTSIDE a code block, but set INSIDE that code block is: " + aVariableINSIDE);
\ No newline at end of file
diff --git a/variable-scope-by-example/variable-scope-by-example.js b/variable-scope-by-example/variable-scope-by-example.js
index ce79eab..b5b87db 100644
--- a/variable-scope-by-example/variable-scope-by-example.js
+++ b/variable-scope-by-example/variable-scope-by-example.js
@@ -1,10 +1,11 @@
 var aVariableOutsideACodeBlock = 10;
 
-if (aVariableOutsideACodeBlock == 10) {
-    var aVariableINSIDE = 20;
-    console.log("(aVariableOutsideACodeBlock) equals " + aVariableOutsideACodeBlock);
-    console.log("(aVariableINSIDE) equals " + aVariableINSIDE);
-}
+    if (aVariableOutsideACodeBlock == 10) {
+        //var aVariableOutsideACodeBlock = 20;
+        var aVariableINSIDE = 30;
+        console.log("aVariableOutsideACodeBlock called from INSIDE the code block is : " + aVariableOutsideACodeBlock);
+        console.log("aVariableINSIDE called inside and set inside is: " + aVariableINSIDE);
+    }
 // The below works if we use var, change the var keywords to let and it will fail
 // This demonstrates the better scope control of let 
-console.log("(aVariableINSIDE) called from outside equals " + aVariableINSIDE);
\ No newline at end of file
+console.log("aVariableINSIDE called from OUTSIDE a code block, but set INSIDE that code block is: " + aVariableINSIDE);
\ No newline at end of file