diff --git a/script.js b/script.js
index 5f39b2e..a9d1349 100644
--- a/script.js
+++ b/script.js
@@ -20,6 +20,7 @@ Array.prototype.forEach.call(buttons, function (button) {
     if (
       trimmedButtonValue != "=" &&
       trimmedButtonValue != "C" &&
+      trimmedButtonValue != "." &&
       trimmedButtonValue != "x" &&
       trimmedButtonValue != "\u00F7" &&
       trimmedButtonValue != "\u221A" &&
@@ -41,7 +42,9 @@ Array.prototype.forEach.call(buttons, function (button) {
       equals();
     } else if (trimmedButtonValue === "C") {
       clear();
-    } else if (trimmedButtonValue === "x") {
+    }else if (trimmedButtonValue === "."){
+      dot()
+    }else if (trimmedButtonValue === "x") {
       multiply();
     } else if (trimmedButtonValue === "\u00F7") {
       divide();
@@ -134,6 +137,21 @@ function clear() {
   display.value = "";
 }
 
+function dot(){
+  let num = display.value.split("");
+  let flag = 0;
+  for(var i=0;i<num.length;i++){
+    if(num[i]==='.'){
+      flag=1
+    }
+  }
+  if(flag==1){
+    display.value = display.value
+  }else{
+    display.value += "."
+  }
+}
+
 function backspace() {
   display.value = display.value.substring(0, display.value.length - 1);
 }