From e1b83a2f3f1bc03d04c8a419876fed863568b459 Mon Sep 17 00:00:00 2001
From: Pradeep M Doddakaragi <pradeepmallappadoddakaragi@gmail.com>
Date: Wed, 17 Dec 2025 18:00:21 +0530
Subject: [PATCH] Update cal.js

---
 Calculator/cal.js | 70 ++++++++++++++++++++---------------------------
 1 file changed, 30 insertions(+), 40 deletions(-)

diff --git a/Calculator/cal.js b/Calculator/cal.js
index 1699f4c..a3b6e77 100644
--- a/Calculator/cal.js
+++ b/Calculator/cal.js
@@ -1,42 +1,32 @@
-let valEl = document.getElementById("val")
-let resEl = document.getElementById("res")
-function clearer(){
-    valEl.innerText = ""
-    resEl.innerText = ""
+const expEl = document.getElementById("expression");
+const resEl = document.getElementById("result");
+
+function add(value){
+  expEl.textContent += value;
 }
-function adder(k){
-    valEl.innerText += k
-    if(k=='*' || k=='+' || k=='-' || k=='/'){
-        compute(0)
-    }
+
+function clearAll(){
+  expEl.textContent = "";
+  resEl.textContent = "0";
+}
+
+function del(){
+  expEl.textContent = expEl.textContent.slice(0, -1);
+}
+
+function calculate(){
+  try{
+    let expr = expEl.textContent
+      .replace(/÷/g,'/')
+      .replace(/×/g,'*')
+      .replace(/sin\(/g,'Math.sin(')
+      .replace(/cos\(/g,'Math.cos(')
+      .replace(/tan\(/g,'Math.tan(')
+      .replace(/ln\(/g,'Math.log(')
+      .replace(/log\(/g,'Math.log10(');
+
+    resEl.textContent = eval(expr);
+  }catch{
+    resEl.textContent = "Error";
+  }
 }
-function compute(is){
-    let temp = valEl.innerText, i
-    let t = temp[temp.length-1];
-    for(i=0;i<temp.length-1;i++){
-        if((temp[i]=='*' || temp[i]=='+' || temp[i]=='-' || temp[i]=='/') && i!=0){
-            break;
-        }
-    }
-    if(i!=temp.length-1){
-        let part1 = parseFloat(temp.substring(0,i));
-        let part2 = parseFloat(temp.substring(i+1));
-        let k5 = temp[i];
-        if(k5=='+'){
-            resEl.innerText = (part1)+(part2);
-        }else if(k5=='-'){
-            resEl.innerText = (part1)-(part2);
-        }else if(k5=='*'){
-            resEl.innerText = (part1)*(part2);
-        }else{
-            resEl.innerText = (part1)/(part2);
-        }
-        resEl.innerText = '= ' + resEl.innerText
-        if(!is){
-            valEl.innerText = resEl.innerText + t
-            if(valEl.innerText[0] == '='){
-                valEl.innerText = valEl.innerText.substring(1)
-            }
-        } 
-    }
-}
\ No newline at end of file