Merge pull request #1663 from ak-sh-at/weight

Weight converter modified

Author: TusharKesarwani

Projects/Weight_converter/script.js

@@ -5,6 +5,10 @@ let ozRef = document.getElementById("oz");
 
 let convertFromKg = () => {
   let kg = kgRef.value;
+  if(kg<0){
+  kgRef.value="";
+  alert("Enter a positive value");
+  return ;}
   //toFixed(2) limits the decimals to 2 digits.
   gmRef.value = (kg * 1000).toFixed(2);
   lbRef.value = (kg * 2.205).toFixed(2);
@@ -13,20 +17,32 @@ let convertFromKg = () => {
 
 let convertFromGm = () => {
     let gm = gmRef.value;
+    if(gm<0){
+      gmRef.value="";
+      alert("Enter a positive value");
+      return ;}
     kgRef.value = (gm / 1000).toFixed(2);
     lbRef.value = (gm / 453.6).toFixed(2);
     ozRef.value = (gm / 28.35).toFixed(2);
   };
 
 let convertFromLb = () => {
   let lb = lbRef.value;
+  if(lb<0){
+    lbRef.value="";
+    alert("Enter a positive value");
+    return ;}
   kgRef.value = (lb / 2.205).toFixed(2);
   gmRef.value = (lb * 453.6).toFixed(2);
   ozRef.value = (lb * 16).toFixed(2);
 };
 
 let convertFromOz = () => {
   let oz = ozRef.value;
+  if(oz<0){
+    ozRef.value="";
+    alert("Enter a Positive Value");
+    return ;}
   kgRef.value = (oz / 35.274).toFixed(2);
   gmRef.value = (oz * 28.35).toFixed(2);
   lbRef.value = (oz / 16).toFixed(2);