diff --git a/04week/loop.js b/04week/loop.js
index e69de29bb..84b689b36 100644
--- a/04week/loop.js
+++ b/04week/loop.js
@@ -0,0 +1,37 @@
+// Use a for loop to console.log each item in the array carsInReverse
+const carsInReverse = ['Ford', 'Honda', 'Lincoln', 'Chevy'];
+
+  for(let i = 0; i < carsInReverse.length; i++){
+  console.log(carsInReverse[i]);
+  }
+
+
+// Create an object (an array with keys and values) called persons with the following data:
+const persons = {
+firstName: "Jane",
+lastName: "Doe",
+birthDate: "Jan 5, 1925",
+gender: "female"
+};
+
+const keys = Object.key(persons)
+// Use a for...in loop to console.log each key.
+for (const prop in persons) {
+  console.log(`${prop} = ${persons[prop]}`);
+};
+
+// Then use a for...in loop and if state, to console.log the value associated with the key birthDate
+keyBirth = persons.birthDate
+
+for(const prop in keyBirth){
+  if(keyBirth==prop.birthDate)
+    console.log(`${prop} = ${keyBirth[prop]}`)
+}
+
+
+// Use a for loop to console.log the numbers 1 to 1000 (while loop)
+let loopNum = 1;
+while (loopNum < 1001){
+  loopNum += 1;
+  console.log(loopNum);
+}