tip calulator modified

Author: ak-sh-at

Projects/Tip Calculator/script.js

@@ -11,6 +11,38 @@ function calculateTotal() {
   const billValue = billInput.value;
   const tipValue = tipInput.value;
   const splitValue = splitInput.value;
+  if(billValue<0 && tipValue<0 && splitValue<0)
+  {
+    alert("Invalid : Please Enter positive bill amount , tip percentage and split value!");
+    return;
+  }
+  if(billValue<0 && tipValue<0)
+  {
+    alert("Invalid : Please enter positive bill amount and tip percentage!");
+    return;
+  }
+  if(billValue<0 && splitValue<0)
+  {
+    alert("Invalid : Please enter positive bill amount and split value!");
+    return;
+  }
+  if(splitValue<0 && tipValue<0)
+  {
+    alert("Invalid : Please enter positive tip percentage and split value!");
+    return;
+  }
+  if(billValue<0){
+    alert("Invalid : Please enter positive bill amount!");
+    return;
+  }
+  if(tipValue<0){
+    alert("Invalid : Please enter positive tip percentage!");
+    return;
+  }
+  if(splitValue<0){
+    alert("Invalid : Please enter positive split value!");
+    return;
+  }
 
   const tipAmount = billValue * (tipValue / 100);
   const totalValue = parseFloat(billValue) + tipAmount;