From 84c967674c94e2bcaf78ad1a403350508720c249 Mon Sep 17 00:00:00 2001
From: Kevin Tran <kevintran11082002@gmail.com>
Date: Sun, 1 Sep 2024 20:05:09 -0400
Subject: [PATCH] best current version

---
 index.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/index.js b/index.js
index 0ad2477..d7c064d 100644
--- a/index.js
+++ b/index.js
@@ -105,6 +105,10 @@ for(let i = 0; i < operatorButton.length; i++){
 //--------------------- This is for clicking equal btn ---------------------
 const equalButton = document.querySelector(".equal");
 equalButton.addEventListener("click", function(){
+    if(calculation.operator == null){
+        return;
+    }
+
     calculation.secondNum = Number(document.querySelector(".display p").innerHTML);
     calculation.result = calculate(calculation.firstNum, calculation.secondNum, calculation.operator);
     calculation.operator = null;