diff --git a/script.js b/script.js
index 0f68729..3919795 100644
--- a/script.js
+++ b/script.js
@@ -1,6 +1,70 @@
 // Please declare functions and variables above where they are used.
 
+var mode = "";
+
 var main = function (input) {
-  var myOutputValue = 'hello world';
+  var myOutputValue = "";
+  if (mode == "") {
+    mode = input;
+    myOutputValue = "you are in mode: " + mode;
+  } else if (mode == "triangle") {
+    myOutputValue = triangleMode(input);
+  } else if (mode == "square") {
+    myOutputValue = squareMode(input);
+  } else if (mode == "inverted") {
+    myOutputValue = invertedMode(input);
+  }
   return myOutputValue;
 };
+
+//triangle mode based on dimension input
+var triangleMode = function (input) {
+  var myOutputValue = "";
+  var lineCounter = 0
+  while (lineCounter < input) {
+    var columnCounter = 0;
+    while (columnCounter < (lineCounter + 1)) {
+      myOutputValue = myOutputValue + "😀"
+      console.log("2" + myOutputValue);
+      columnCounter = columnCounter + 1;
+    }
+    myOutputValue = myOutputValue + '<br>'
+    console.log("3" + myOutputValue);
+    lineCounter = lineCounter + 1;
+  }
+  return myOutputValue;
+}
+
+//inverted mode based on dimension input
+var invertedMode = function (input) {
+  var myOutputValue = "";
+  var lineCounter = 0
+  while (lineCounter < input) {
+    var columnCounter = 0;
+    while (columnCounter < (input - lineCounter)) {
+      myOutputValue = myOutputValue + "😀"
+      console.log("2" + myOutputValue);
+      columnCounter = columnCounter + 1;
+    }
+    myOutputValue = myOutputValue + '<br>'
+    console.log("3" + myOutputValue);
+    lineCounter = lineCounter + 1;
+  }
+  return myOutputValue;
+}
+
+//square mode based on dimension input
+var squareMode = function (input) {
+  var myOutputValue = "";
+  var lineCounter = 0
+  while (lineCounter < input) {
+    var columnCounter = 0;
+    while (columnCounter < input) {
+      myOutputValue = myOutputValue + "😀";
+      columnCounter = columnCounter + 1;
+    }
+    myOutputValue = myOutputValue + '<br>';
+    lineCounter = lineCounter + 1;
+  }
+  return myOutputValue;
+}
\ No newline at end of file