changed code -> You can no longer select another field if any field is selected

code.js

@@ -3,13 +3,21 @@ for(let i = 0; i < 64; i++){
     fieldId = i.toString();
     document.getElementById("field"+fieldId).selected = 0;
 }
+let somethingIsSelected = false;
 function selectField(field){
     console.log(field.id);
-    if(field.selected === 0) {
+    for(let i = 0; i < 64; i++){
+        fieldId = i.toString();
+        if(document.getElementById("field"+fieldId).selected === 1){
+            somethingIsSelected = true;
+        }
+    }
+    if(!somethingIsSelected) {
         field.style.backgroundColor = "rgb(227,8,8, 0.3)";
         field.selected = 1;
     } else if (field.selected === 1){
         field.style.backgroundColor = "rgb(255,255,255, 1)";
         field.selected = 0;
+        somethingIsSelected = false;
     }
 }