diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000..3a0fdc2
Binary files /dev/null and b/.DS_Store differ
diff --git a/01_Day_JavaScript_Refresher/index.html b/01_Day_JavaScript_Refresher/index.html
new file mode 100644
index 0000000..57d5ed8
--- /dev/null
+++ b/01_Day_JavaScript_Refresher/index.html
@@ -0,0 +1,13 @@
+
+
+
+
+
+ Day 1
+
+
+ Day 1
+
+
+
+
\ No newline at end of file
diff --git a/01_Day_JavaScript_Refresher/introduction.js b/01_Day_JavaScript_Refresher/introduction.js
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--- /dev/null
+++ b/01_Day_JavaScript_Refresher/introduction.js
@@ -0,0 +1,21 @@
+const popUp = document.getElementById('popUp')
+
+popUp.addEventListener('click', function() {
+ alert('Hello World')
+})
+
+
+// Arrays
+const names = Array('Gideon', 'Courage', 'Femi', 'Jude', 250, true, false, 'HTML', 'CSS', 'Python');
+names[1] = 'Wife'
+names[0] = 'Husband'
+let firtsName = names[0];
+const strings = " 'Gideon', 'Courage', 'Mufasa' "
+const splitstrings = strings.split('')
+
+console.log(names);
+console.log(firtsName);
+console.log(names.length);
+console.log(splitstrings);
+
+//