diff --git a/.DS_Store b/.DS_Store
index 19f35c2d4..abe5d4347 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/Week3/homework/js-exercises/ex1-AddSix.js b/Week3/homework/js-exercises/ex1-AddSix.js
new file mode 100644
index 000000000..62a979912
--- /dev/null
+++ b/Week3/homework/js-exercises/ex1-AddSix.js
@@ -0,0 +1,16 @@
+'use strict';
+
+function createBase(baseNum) {
+
+ function sum(num) {
+ console.log(baseNum + num);
+ }
+ return sum; //function createBase returns a closure that adds num to baseNum
+
+}
+
+const addSix = createBase(6);
+
+addSix(9);
+addSix(18);
+addSix(30);
\ No newline at end of file
diff --git a/Week3/homework/js-exercises/ex2-RemoveDuplicates.js b/Week3/homework/js-exercises/ex2-RemoveDuplicates.js
new file mode 100644
index 000000000..764631591
--- /dev/null
+++ b/Week3/homework/js-exercises/ex2-RemoveDuplicates.js
@@ -0,0 +1,7 @@
+'use strict';
+
+
+const letters = ['a', 'b', 'c', 'd', 'a', 'e', 'f', 'c', 'b'];
+const removeDuplicates = arr => [...new Set(arr)];
+
+console.log(removeDuplicates(letters));
\ No newline at end of file
diff --git a/Week3/homework/js-exercises/ex3-GuessTheOutput.js b/Week3/homework/js-exercises/ex3-GuessTheOutput.js
new file mode 100644
index 000000000..5f7237f74
--- /dev/null
+++ b/Week3/homework/js-exercises/ex3-GuessTheOutput.js
@@ -0,0 +1,13 @@
+'use strict';
+
+//the output would be 12. The returning function will be returned as closure. So it will use the 'variable a' from its outer function which has been assigned a new value(12).
+
+let a = 10;
+const x = (function () {
+ a = 12;
+ return function () {
+ alert(a);
+ };
+})();
+
+x();
\ No newline at end of file
diff --git a/Week3/homework/js-exercises/ex4-GuessMore.js b/Week3/homework/js-exercises/ex4-GuessMore.js
new file mode 100644
index 000000000..b2207df4c
--- /dev/null
+++ b/Week3/homework/js-exercises/ex4-GuessMore.js
@@ -0,0 +1,20 @@
+'use strict';
+const x = 9;
+
+function f1(val) {
+ val = val + 1;
+ return val;
+}
+f1(x);
+console.log(x); //prints 9, because x is assigned a new value in the function(local) not in global scope
+
+const y = {
+ x: 9
+};
+
+function f2(val) {
+ val.x = val.x + 1;
+ return val;
+}
+f2(y);
+console.log(y); //prints {x:10}, due to its an object; the changes on variable y will affect the y in global scope
\ No newline at end of file
diff --git a/Week3/homework/js-exercises/ex5-LotteryMachine.js b/Week3/homework/js-exercises/ex5-LotteryMachine.js
new file mode 100644
index 000000000..eda513141
--- /dev/null
+++ b/Week3/homework/js-exercises/ex5-LotteryMachine.js
@@ -0,0 +1,38 @@
+'use strict';
+
+function threeFive(startIndex, stopIndex, threeCallback, fiveCallback) {
+ const numbers = [];
+ for (let indis = startIndex; indis <= stopIndex; indis++) {
+ numbers.push(indis);
+ }
+ console.log(numbers);
+ numbers.forEach(function (indis) {
+ if (indis % 15 === 0) {
+ // console.log('five and three');
+ // console.log(indis);
+ threeCallback();
+ fiveCallback();
+ } else if (indis % 5 === 0) {
+ // console.log(indis);
+ // console.log('only five');
+ fiveCallback();
+
+ } else if (indis % 3 === 0) {
+ // console.log(indis);
+ // console.log('only three')
+ threeCallback();
+ }
+ });
+
+}
+const sayThree = function () {
+ console.log('sayThree callback called');
+}
+
+const sayFive = function () {
+ console.log('sayFive callback called');
+}
+threeFive(10, 15, sayThree, sayFive);
+
+// Should create an array [10,11,12,13,14,15]
+// and call sayFive, sayThree, sayThree, sayFive
\ No newline at end of file
diff --git a/Week3/homework/project/app.js b/Week3/homework/project/app.js
new file mode 100644
index 000000000..a726efc43
--- /dev/null
+++ b/Week3/homework/project/app.js
@@ -0,0 +1 @@
+'use strict';
\ No newline at end of file
diff --git a/Week3/homework/project/index.html b/Week3/homework/project/index.html
new file mode 100644
index 000000000..67ddea3a6
--- /dev/null
+++ b/Week3/homework/project/index.html
@@ -0,0 +1,41 @@
+
+
+
+
+
+
+ Document
+
+
+
+
+
+
TIP CALCULATOR
+
+
TIP AMOUNT
+
+
each
+