From 04624b929867c4522d9ad9958bb460c55c295b18 Mon Sep 17 00:00:00 2001
From: Shivam Kumar Choudhary <choudharyshiv420@gmail.com>
Date: Fri, 17 Apr 2026 10:01:47 +0530
Subject: [PATCH] Added validation to prevent future date in age calculator

### Changes Made
- Added validation for empty input
- Prevented future date selection
- Improved accuracy of age calculation

### Type
- Enhancement
---
 projects/age-calculator/index.js | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/projects/age-calculator/index.js b/projects/age-calculator/index.js
index b2888ee..dcfc148 100644
--- a/projects/age-calculator/index.js
+++ b/projects/age-calculator/index.js
@@ -4,9 +4,26 @@ const resultEl = document.getElementById("result");
 
 function calculateAge() {
   const birthdayValue = birthdayEl.value;
+
+  // 🔥 VALIDATION 1: EMPTY CHECK
   if (birthdayValue === "") {
     alert("Please enter your birthday");
-  } else {
+    return;
+  }
+
+  // 🔥 VALIDATION 2: FUTURE DATE BLOCK
+  const selectedDate = new Date(birthdayValue);
+  const today = new Date();
+
+  if (selectedDate > today) {
+    alert("Future date not allowed");
+    return;
+  }
+
+  // ✅ ORIGINAL CODE
+  const age = getAge(birthdayValue);
+  resultEl.innerText = `Your age is ${age} ${age > 1 ? "years" : "year"} old`;
+}
     const age = getAge(birthdayValue);
     resultEl.innerText = `Your age is ${age} ${age > 1 ? "years" : "year"} old`;
   }